MediumCVE-2015-3195

    OpenSSL: Information Disclosure (CVE-2015-3195)

    Published Sources: CVE.org

    What is affected, what to do

    The ASN1_TFLG_COMBINE implementation in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zh, 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1q, and 1.0.2 before 1.0.2e mishandles errors caused by malformed X509_ATTRIBUTE data, which allows remote attackers to obtain sensitive information from process memory by triggering a decoding failure in a PKCS#7 or CMS application.

    Update Apple Mac OS X to version 10.11.4, Oracle VM VirtualBox to version 4.3.36, Oracle VM VirtualBox to version 5.0.14.

    Affected
    • Apple Mac OS X lt *..10.11.4
    • Oracle API Gateway eq 11.1.2.3.0..11.1.2.3.0
    • Oracle API Gateway eq 11.1.2.4.0..11.1.2.4.0
    • Oracle Communications Webrtc Session Controller eq 7.0..7.0
    • Oracle Communications Webrtc Session Controller eq 7.1..7.1
    • Oracle Communications Webrtc Session Controller eq 7.2..7.2
    • Oracle Exalogic Infrastructure eq 1.0..1.0
    • Oracle Exalogic Infrastructure eq 2.0..2.0
    • Oracle HTTP Server eq 11.5.10.2..11.5.10.2
    • Oracle Life Sciences Data Hub eq 2.1..2.1
    • Oracle Sun Ray Software eq 11.1..11.1
    • Oracle Transportation Management eq 6.1..6.1
    • Oracle Transportation Management eq 6.2..6.2
    • Oracle VM Server for x86 eq 3.2..3.2
    • Oracle VM VirtualBox lt *..4.3.36
    • Oracle VM VirtualBox lt 5.0.0..5.0.14
    • Oracle Integrated Lights Out Manager Firmware lte 3.0..4.0.4
    • Oracle Linux eq 5..5
    • Oracle Linux eq 6..6
    • Oracle Linux eq 7..7
    • Oracle Solaris eq 10..10
    • Oracle Solaris eq 11.3..11.3
    • OpenSSL lt *..0.9.8zh
    • OpenSSL lt 1.0.0..1.0.0t
    • OpenSSL lt 1.0.1..1.0.1q
    • OpenSSL lt 1.0.2..1.0.2e
    • Redhat Enterprise Linux Desktop eq 5.0..5.0
    • Redhat Enterprise Linux Desktop eq 6.0..6.0
    • Redhat Enterprise Linux Desktop eq 7.0..7.0
    • Redhat Enterprise Linux Server eq 5.0..5.0
    • Redhat Enterprise Linux Server eq 6.0..6.0
    • Redhat Enterprise Linux Server eq 7.0..7.0
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 7.2..7.2
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 7.3..7.3
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 7.4..7.4
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 7.6..7.6
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 7.7..7.7
    • Red Hat Enterprise Linux Server (TUS) eq 7.2..7.2
    • Red Hat Enterprise Linux Server (TUS) eq 7.3..7.3
    • Red Hat Enterprise Linux Server (TUS) eq 7.6..7.6
    • Red Hat Enterprise Linux Server (TUS) eq 7.7..7.7
    • Redhat Enterprise Linux Workstation eq 5.0..5.0
    • Redhat Enterprise Linux Workstation eq 6.0..6.0
    • Redhat Enterprise Linux Workstation eq 7.0..7.0
    • Canonical Ubuntu Linux eq 12.04..12.04
    • Canonical Ubuntu Linux eq 14.04..14.04
    • Canonical Ubuntu Linux eq 15.04..15.04
    • Canonical Ubuntu Linux eq 15.10..15.10
    • Debian Linux eq 7.0..7.0
    • Debian Linux eq 8.0..8.0
    • openSUSE Leap eq 42.1..42.1
    • OpenSUSE eq 11.4..11.4
    • OpenSUSE eq 13.1..13.1
    • OpenSUSE eq 13.2..13.2
    • SUSE Linux Enterprise Server eq 10..10
    • Fedora eq 22..22
    Fixed in
    • Apple Mac OS X 10.11.4
    • Oracle VM VirtualBox 4.3.36
    • Oracle VM VirtualBox 5.0.14
    • OpenSSL 0.9.8zh
    • OpenSSL 1.0.0t
    • OpenSSL 1.0.1q
    • OpenSSL 1.0.2e

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    5.3

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    5.3

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: CVE.org

    38.7 %

    EPSS score

    Elevated — model estimates 10-50% exploitation likelihood.

    Source: FIRST EPSS, percentile 98.6

    Show all metrics
    Severity
    Medium
    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
    104.24 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
    5.3 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
    5.3
    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
    38.7 %
    Elevated — model estimates 10-50% 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
    98.6
    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
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    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

    The ASN1_TFLG_COMBINE implementation in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zh, 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1q, and 1.0.2 before 1.0.2e mishandles errors caused by malformed X509_ATTRIBUTE data, which allows remote attackers to obtain sensitive information from process memory by triggering a decoding failure in a PKCS#7 or CMS application.

    Source: cvelistv5, NVD (NIST)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    opensslopenssl
    • < 0.9.8zh
    • 1.0.0 – < 1.0.0t
    • 1.0.2 – < 1.0.2e
    • 1.0.1 – < 1.0.1q
    • 0.9.8zh
    • 1.0.0t
    • 1.0.2e
    • 1.0.1q
    oracleapi_gateway
    • 11.1.2.4.0
    • 11.1.2.3.0
    • —
    • —
    oraclecommunications_webrtc_session_controller
    • 7.1
    • 7.2
    • 7.0
    • —
    • —
    • —
    oracleexalogic_infrastructure
    • 1.0
    • 2.0
    • —
    • —
    oraclehttp_server
    • 11.5.10.2
    • —
    oraclelife_sciences_data_hub
    • 2.1
    • —
    oraclesun_ray_software
    • 11.1
    • —
    oracletransportation_management
    • 6.1
    • 6.2
    • —
    • —
    oraclevm_server
    • 3.2
    • —
    oraclevm_virtualbox
    • 5.0.0 – < 5.0.14
    • < 4.3.36
    • 5.0.14
    • 4.3.36

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebiandebian_linux7.0
    Linuxdebiandebian_linux8.0
    Linuxredhatenterprise_linux_desktop5.0
    Linuxredhatenterprise_linux_desktop6.0
    Linuxredhatenterprise_linux_desktop7.0
    Linuxredhatenterprise_linux_server5.0
    Linuxredhatenterprise_linux_server6.0
    Linuxredhatenterprise_linux_server7.0
    Linuxredhatenterprise_linux_server_aus7.2
    Linuxredhatenterprise_linux_server_aus7.3
    Linuxredhatenterprise_linux_server_aus7.4
    Linuxredhatenterprise_linux_server_aus7.6
    Linuxredhatenterprise_linux_server_aus7.7
    Linuxredhatenterprise_linux_server_tus7.2
    Linuxredhatenterprise_linux_server_tus7.3
    Linuxredhatenterprise_linux_server_tus7.6
    Linuxredhatenterprise_linux_server_tus7.7
    Linuxredhatenterprise_linux_workstation5.0
    Linuxredhatenterprise_linux_workstation6.0
    Linuxredhatenterprise_linux_workstation7.0
    Linuxopensuseleap42.1
    Linuxoraclelinux5
    Linuxoraclelinux6
    Linuxoraclelinux7

    References & sources

    • oracle.comtechnetwork/topics/security/ovmbulletinjul2016-3090546.htmlThird-party advisory
    • lists.apple.comAPPLE-SA-2016-03-21-5Vendor advisory, Mailing list, Third-party advisory
    • rhn.redhat.comRHSA-2016:2056Vendor advisory, Broken link
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131085Third-party advisory
    • oracle.comtechnetwork/security-advisory/cpujan2018-3236628.htmlThird-party advisory
    • support.apple.comHT206167Third-party advisory
    • tools.cisco.com20151204 Multiple Vulnerabilities in OpenSSL (December 2015) Affecting Cisco ProductsVendor advisory, Third-party advisory
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944173Third-party advisory
    • oracle.comtechnetwork/security-advisory/cpujul2016-2881720.htmlThird-party advisory
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017Third-party advisory
    • lists.opensuse.orgopenSUSE-SU-2015:2288Vendor advisory, Mailing list, Third-party advisory
    • rhn.redhat.comRHSA-2015:2617Vendor advisory, Third-party advisory
    • fortiguard.comadvisory/openssl-advisory-december-2015Broken link
    • oracle.comtechnetwork/topics/security/cpujan2016-2367955.htmlThird-party advisory
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888Third-party advisory
    • slackware.comSSA:2015-349-04Vendor advisory, Third-party advisory
    • lists.opensuse.orgopenSUSE-SU-2016:0640Vendor advisory, Mailing list, Third-party advisory
    • oracle.comtechnetwork/security-advisory/cpuoct2016-2881722.htmlThird-party advisory
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380Third-party advisory
    • oracle.comtechnetwork/security-advisory/cpuoct2017-3236626.htmlThird-party advisory
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