ICU Project International Components For Unicode: Heap-Based Buffer Overflow (CVE-2020-10531)
Published Last modified Sources: CVE.org, OSV
What is affected, what to do
An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.
Update Google Chrome to version 80.0.3987.122, Node to version 10.21.0.
- Affected
- ICU Project International Components For Unicode
lte *..66.1 - Redhat Enterprise Linux Desktop
eq 6.0..6.0 - Redhat Enterprise Linux Server
eq 6.0..6.0 - Redhat Enterprise Linux Workstation
eq 6.0..6.0 - Google Chrome
lt *..80.0.3987.122 - Fedora
eq 30..30 - Fedora
eq 31..31 - Fedora
eq 33..33 - Debian Linux
eq 8.0..8.0 - Debian Linux
eq 9.0..9.0 - Debian Linux
eq 10.0..10.0 - Canonical Ubuntu Linux
eq 12.04..12.04 - Canonical Ubuntu Linux
eq 14.04..14.04 - Canonical Ubuntu Linux
eq 16.04..16.04 - Canonical Ubuntu Linux
eq 18.04..18.04 - Canonical Ubuntu Linux
eq 19.10..19.10 - openSUSE Leap
eq 15.1..15.1 - Oracle Banking Extensibility Workbench
eq 14.3.0..14.3.0 - Oracle Banking Extensibility Workbench
eq 14.4.0..14.4.0 - Node
lte 10.0.0..10.12.0 - Node
lt 10.13.0..10.21.0
- ICU Project International Components For Unicode
- Fixed in
- Google Chrome
80.0.3987.122 - Node
10.21.0
- Google Chrome
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Metrics
8.8
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
8.8
CVSS v3
Severity High on the scale from 0 to 10.
Source: CVE.org, OSV
2.7 %
EPSS score
Moderate — model estimates 1-10% exploitation likelihood.
Source: FIRST EPSS, percentile 85.8
Show all metrics
- Severity
- High
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 102.82 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 8.8 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 8.8
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 2.7 %
- Moderate — model estimates 1-10% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 85.8
- Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.
Source: cvelistv5, NVD (NIST), OSV (Open Source Vulnerabilities)
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| chrome |
|
| |
| icu-project | international_components_for_unicode |
|
|
| nodejs | node.js |
|
|
| oracle | banking_extensibility_workbench |
|
|
Vendors and products
- Canonical Canonical Ubuntu Linux
- Debian Debian Linux
- Fedora Project Infrastructure Fedora
- Google Google Chrome
- Icu-project ICU Project International Components For Unicode
- NodeJS Node
- openSUSE openSUSE Leap
- Oracle Banking Extensibility Workbench
- Red Hat Redhat Enterprise Linux Desktop
- Red Hat Redhat Enterprise Linux Server
- Red Hat Red Hat Enterprise Linux Workstation
Affected operating systems
| Linux | debian | debian_linux | 10.0 |
| Linux | debian | debian_linux | 8.0 |
| Linux | debian | debian_linux | 9.0 |
| Linux | redhat | enterprise_linux_desktop | 6.0 |
| Linux | redhat | enterprise_linux_server | 6.0 |
| Linux | redhat | enterprise_linux_workstation | 6.0 |
| Linux | opensuse | leap | 15.1 |
| Linux | canonical | ubuntu_linux | 12.04 |
| Linux | canonical | ubuntu_linux | 14.04 |
| Linux | canonical | ubuntu_linux | 16.04 |
| Linux | canonical | ubuntu_linux | 18.04 |
| Linux | canonical | ubuntu_linux | 19.10 |
| Other | fedoraproject | fedora | 30 |
| Other | fedoraproject | fedora | 31 |
| Other | fedoraproject | fedora | 33 |
References & sources
- lists.opensuse.orgopenSUSE-SU-2020:0459web, Vendor advisory, x_refsource_SUSE
- access.redhat.comRHSA-2020:0738web, Vendor advisory, x_refsource_REDHAT
- bugs.chromium.orgp/chromium/issues/detail?id=1044570web, x_refsource_MISC
- chromereleases.googleblog.com2020/02/stable-channel-update-for-desktop_24.htmlweb, x_refsource_MISC
- chromium.googlesource.comchromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08web, x_refsource_MISC
- github.comunicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afcaweb, x_refsource_MISC
- github.comunicode-org/icu/pull/971web, x_refsource_MISC
- lists.debian.org[debian-lts-announce] 20200320 [SECURITY] [DLA 2151-1] icu security updateweb, Mailing list, x_refsource_MLIST
- lists.fedoraproject.orgFEDORA-2020-43d5a372fcweb, Vendor advisory, x_refsource_FEDORA
- lists.fedoraproject.orgFEDORA-2020-39e0b8bd14web, Vendor advisory, x_refsource_FEDORA
- lists.fedoraproject.orgFEDORA-2020-f6271d7afaweb, Vendor advisory, x_refsource_FEDORA
- security.gentoo.orgGLSA-202003-15web, Vendor advisory, x_refsource_GENTOO
- unicode-org.atlassian.netbrowse/ICU-20958web, x_refsource_MISC
- usn.ubuntu.comUSN-4305-1web, Vendor advisory, x_refsource_UBUNTU
- debian.orgDSA-4646web, Vendor advisory, x_refsource_DEBIAN
- oracle.comsecurity-alerts/cpujul2021.htmlweb, x_refsource_MISC
- oracle.comsecurity-alerts/cpuapr2022.htmlweb, x_refsource_MISC
- oracle.comsecurity-alerts/cpujan2021.htmlweb, x_refsource_MISC
- NVD (NIST)vuln/detail/CVE-2020-10531web
- Siemens ProductCERTproductcert/html/ssa-398330.html
Changes to this CVE
Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).
Record modifiedMITRE
New references:- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html
- https://access.redhat.com/errata/RHSA-2020:0738
- https://bugs.chromium.org/p/chromium/issues/detail?id=1044570
- https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html
and 8 more references
Show 51 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.htmlReference added —https://access.redhat.com/errata/RHSA-2020:0738Reference added —https://bugs.chromium.org/p/chromium/issues/detail?id=1044570Reference added —https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.htmlReference added —https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08Reference added —https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afcaReference added —https://github.com/unicode-org/icu/pull/971Reference added —https://lists.debian.org/debian-lts-announce/2020/03/msg00024.htmlReference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/Reference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/Reference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/Reference added —https://security.gentoo.org/glsa/202003-15Reference added —https://unicode-org.atlassian.net/browse/ICU-20958Reference added —https://usn.ubuntu.com/4305-1/Reference added —https://www.debian.org/security/2020/dsa-4646Reference added —https://www.oracle.com//security-alerts/cpujul2021.htmlReference added —https://www.oracle.com/security-alerts/cpuapr2022.htmlReference added —https://www.oracle.com/security-alerts/cpujan2021.htmlReference removed http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html—Reference removed https://access.redhat.com/errata/RHSA-2020:0738—Reference removed https://bugs.chromium.org/p/chromium/issues/detail?id=1044570—Reference removed https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html—Reference removed https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08—Reference removed https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca—Reference removed https://github.com/unicode-org/icu/pull/971—Reference removed https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/—Reference removed https://security.gentoo.org/glsa/202003-15—Reference removed https://unicode-org.atlassian.net/browse/ICU-20958—Reference removed https://usn.ubuntu.com/4305-1/—Reference removed https://www.debian.org/security/2020/dsa-4646—Reference removed https://www.oracle.com//security-alerts/cpujul2021.html—Reference removed https://www.oracle.com/security-alerts/cpuapr2022.html—Reference removed https://www.oracle.com/security-alerts/cpujan2021.html—Reference type removed http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html Types: Mailing List, Third Party Advisory—Reference type removed https://access.redhat.com/errata/RHSA-2020:0738 Types: Third Party Advisory—Reference type removed https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 Types: Permissions Required, Third Party Advisory—Reference type removed https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html Types: Third Party Advisory—Reference type removed https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Types: Patch, Third Party Advisory—Reference type removed https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Types: Patch, Third Party Advisory—Reference type removed https://github.com/unicode-org/icu/pull/971 Types: Issue Tracking, Patch, Third Party Advisory—Reference type removed https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html Types: Mailing List, Third Party Advisory—Reference type removed https://security.gentoo.org/glsa/202003-15 Types: Third Party Advisory—Reference type removed https://unicode-org.atlassian.net/browse/ICU-20958 Types: Permissions Required, Third Party Advisory—Reference type removed https://usn.ubuntu.com/4305-1/ Types: Third Party Advisory—Reference type removed https://www.debian.org/security/2020/dsa-4646 Types: Third Party Advisory—Reference type removed https://www.oracle.com//security-alerts/cpujul2021.html Types: Not Applicable, Third Party Advisory—Reference type removed https://www.oracle.com/security-alerts/cpuapr2022.html Types: Third Party Advisory—Reference type removed https://www.oracle.com/security-alerts/cpujan2021.html Types: Patch, Third Party Advisory—Source identifier: cve@mitre.org
Record modifiedCVE Program
New references:- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html
- https://access.redhat.com/errata/RHSA-2020:0738
- https://bugs.chromium.org/p/chromium/issues/detail?id=1044570
- https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html
and 8 more references
Show 51 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.htmlReference added —https://access.redhat.com/errata/RHSA-2020:0738Reference added —https://bugs.chromium.org/p/chromium/issues/detail?id=1044570Reference added —https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.htmlReference added —https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08Reference added —https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afcaReference added —https://github.com/unicode-org/icu/pull/971Reference added —https://lists.debian.org/debian-lts-announce/2020/03/msg00024.htmlReference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/Reference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/Reference added —https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/Reference added —https://security.gentoo.org/glsa/202003-15Reference added —https://unicode-org.atlassian.net/browse/ICU-20958Reference added —https://usn.ubuntu.com/4305-1/Reference added —https://www.debian.org/security/2020/dsa-4646Reference added —https://www.oracle.com//security-alerts/cpujul2021.htmlReference added —https://www.oracle.com/security-alerts/cpuapr2022.htmlReference added —https://www.oracle.com/security-alerts/cpujan2021.htmlReference removed http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html—Reference removed https://access.redhat.com/errata/RHSA-2020:0738—Reference removed https://bugs.chromium.org/p/chromium/issues/detail?id=1044570—Reference removed https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html—Reference removed https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08—Reference removed https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca—Reference removed https://github.com/unicode-org/icu/pull/971—Reference removed https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/—Reference removed https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/—Reference removed https://security.gentoo.org/glsa/202003-15—Reference removed https://unicode-org.atlassian.net/browse/ICU-20958—Reference removed https://usn.ubuntu.com/4305-1/—Reference removed https://www.debian.org/security/2020/dsa-4646—Reference removed https://www.oracle.com//security-alerts/cpujul2021.html—Reference removed https://www.oracle.com/security-alerts/cpuapr2022.html—Reference removed https://www.oracle.com/security-alerts/cpujan2021.html—Reference type removed http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html Types: Mailing List, Third Party Advisory—Reference type removed https://access.redhat.com/errata/RHSA-2020:0738 Types: Third Party Advisory—Reference type removed https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 Types: Permissions Required, Third Party Advisory—Reference type removed https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html Types: Third Party Advisory—Reference type removed https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Types: Patch, Third Party Advisory—Reference type removed https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Types: Patch, Third Party Advisory—Reference type removed https://github.com/unicode-org/icu/pull/971 Types: Issue Tracking, Patch, Third Party Advisory—Reference type removed https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html Types: Mailing List, Third Party Advisory—Reference type removed https://security.gentoo.org/glsa/202003-15 Types: Third Party Advisory—Reference type removed https://unicode-org.atlassian.net/browse/ICU-20958 Types: Permissions Required, Third Party Advisory—Reference type removed https://usn.ubuntu.com/4305-1/ Types: Third Party Advisory—Reference type removed https://www.debian.org/security/2020/dsa-4646 Types: Third Party Advisory—Reference type removed https://www.oracle.com//security-alerts/cpujul2021.html Types: Not Applicable, Third Party Advisory—Reference type removed https://www.oracle.com/security-alerts/cpuapr2022.html Types: Third Party Advisory—Reference type removed https://www.oracle.com/security-alerts/cpujan2021.html Types: Patch, Third Party Advisory—Source identifier: af854a3a-2127-422b-91ae-364da2661108
Record modifiedSiemens ADP
Show 2 original changes
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) added —New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2020/10xxx/CVE-2020-10531.json">CVE-2020-10531</a>Reference added —https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlSource identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
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<a href="https://intel.neosec.eu/en/cve/CVE-2020-10531"><img src="https://intel.neosec.eu/badge/cve/CVE-2020-10531.svg?lang=en" alt="CVE-2020-10531 – NEOSEC Intel" height="20"></a>