HighCVE-2020-8023

    Local privilege escalation from ldap to root when using OPENLDAP_CONFIG_BACKEND=ldap in openldap2 (CVE-2020-8023)

    Published Sources: CVE.org

    What is affected, what to do

    A acceptance of Extraneous Untrusted Data With Trusted Data vulnerability in the start script of openldap2 of SUSE Enterprise Storage 5, SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SECURITY, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server 12-SP2-BCL, SUSE Linux Enterprise Server 12-SP2-LTSS, SUSE Linux Enterprise Server 12-SP3-BCL, SUSE Linux Enterprise Server 12-SP3-LTSS, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 12-SP2, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 15, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8; openSUSE Leap 15.1, openSUSE Leap 15.2 allows local attackers to escalate privileges from user ldap to root. This issue affects: SUSE Enterprise Storage 5 openldap2 versions prior to 2.4.41-18.71.2.

    An exploit is publicly available. Update SUSE Enterprise Storage 5 to version 2.4.41-18.71.2, SUSE Linux Enterprise Debuginfo 11-SP3 to version 2.4.26-0.74.13.1, SUSE Linux Enterprise Debuginfo 11-SP4 to version 2.4.26-0.74.13.1.

    Affected
    • SUSE Enterprise Storage 5 lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Debuginfo 11-SP3 lt openldap2..2.4.26-0.74.13.1
    • SUSE Linux Enterprise Debuginfo 11-SP4 lt openldap2..2.4.26-0.74.13.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 lt openldap2..2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 11-SECURITY lt openldap2-client-openssl1..2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 11-SP4-LTSS lt openldap2..2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 12-SP2-BCL lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP2-LTSS lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP3-BCL lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP3-LTSS lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP4 lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP5 lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server 15-LTSS lt openldap2..2.4.46-9.31.1
    • SUSE Linux Enterprise Server for SAP 12-SP2 lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server for SAP 12-SP3 lt openldap2..2.4.41-18.71.2
    • SUSE Linux Enterprise Server for SAP 15 lt openldap2..2.4.46-9.31.1
    • SUSE OpenStack Cloud 7 lt openldap2..2.4.41-18.71.2
    • SUSE OpenStack Cloud 8 lt openldap2..2.4.41-18.71.2
    • SUSE OpenStack Cloud Crowbar 8 lt openldap2..2.4.41-18.71.2
    • openSUSE Leap 15.1 lt openldap2..2.4.46-lp151.10.12.1
    • openSUSE Leap 15.2 lt openldap2..2.4.46-lp152.14.3.1
    Fixed in
    • SUSE Enterprise Storage 5 2.4.41-18.71.2
    • SUSE Linux Enterprise Debuginfo 11-SP3 2.4.26-0.74.13.1
    • SUSE Linux Enterprise Debuginfo 11-SP4 2.4.26-0.74.13.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 11-SECURITY 2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 11-SP4-LTSS 2.4.26-0.74.13.1
    • SUSE Linux Enterprise Server 12-SP2-BCL 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP2-LTSS 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP3-BCL 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP3-LTSS 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP4 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 12-SP5 2.4.41-18.71.2
    • SUSE Linux Enterprise Server 15-LTSS 2.4.46-9.31.1
    • SUSE Linux Enterprise Server for SAP 12-SP2 2.4.41-18.71.2
    • SUSE Linux Enterprise Server for SAP 12-SP3 2.4.41-18.71.2
    • SUSE Linux Enterprise Server for SAP 15 2.4.46-9.31.1
    • SUSE OpenStack Cloud 7 2.4.41-18.71.2
    • SUSE OpenStack Cloud 8 2.4.41-18.71.2
    • SUSE OpenStack Cloud Crowbar 8 2.4.41-18.71.2
    • openSUSE Leap 15.1 2.4.46-lp151.10.12.1
    • openSUSE Leap 15.2 2.4.46-lp152.14.3.1

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

    Metrics

    7.8

    Priority

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

    Source: NVD, CVSS v3

    7.7

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    0.4 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 34.9

    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
    48.25 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
    PoC (publicly reported)
    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
    7.8 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
    7.7
    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
    0.4 %
    Low — model estimates < 1% 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
    34.9
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    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
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-349

    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

    A acceptance of Extraneous Untrusted Data With Trusted Data vulnerability in the start script of openldap2 of SUSE Enterprise Storage 5, SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SECURITY, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server 12-SP2-BCL, SUSE Linux Enterprise Server 12-SP2-LTSS, SUSE Linux Enterprise Server 12-SP3-BCL, SUSE Linux Enterprise Server 12-SP3-LTSS, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 12-SP2, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 15, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8; openSUSE Leap 15.1, openSUSE Leap 15.2 allows local attackers to escalate privileges from user ldap to root. This issue affects: SUSE Enterprise Storage 5 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Debuginfo 11-SP3 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Debuginfo 11-SP4 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Point of Sale 11-SP3 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Server 11-SECURITY openldap2-client-openssl1 versions prior to 2.4.26-0.74.13.1. SUSE Linux Enterprise Server 11-SP4-LTSS openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Server 12-SP2-BCL openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP2-LTSS openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP3-BCL openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP3-LTSS openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP4 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP5 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 15-LTSS openldap2 versions prior to 2.4.46-9.31.1. SUSE Linux Enterprise Server for SAP 12-SP2 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server for SAP 12-SP3 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server for SAP 15 openldap2 versions prior to 2.4.46-9.31.1. SUSE OpenStack Cloud 7 openldap2 versions prior to 2.4.41-18.71.2. SUSE OpenStack Cloud 8 openldap2 versions prior to 2.4.41-18.71.2. SUSE OpenStack Cloud Crowbar 8 openldap2 versions prior to 2.4.41-18.71.2. openSUSE Leap 15.1 openldap2 versions prior to 2.4.46-lp151.10.12.1. openSUSE Leap 15.2 openldap2 versions prior to 2.4.46-lp152.14.3.1.

    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
    openSUSEopenSUSE Leap 15.1
    • openldap2 – < 2.4.46-lp151.10.12.1
    • 2.4.46-lp151.10.12.1
    openSUSEopenSUSE Leap 15.2
    • openldap2 – < 2.4.46-lp152.14.3.1
    • 2.4.46-lp152.14.3.1
    SUSESUSE Enterprise Storage 5
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Debuginfo 11-SP3
    • openldap2 – < 2.4.26-0.74.13.1
    • 2.4.26-0.74.13.1
    SUSESUSE Linux Enterprise Debuginfo 11-SP4
    • openldap2 – < 2.4.26-0.74.13.1
    • 2.4.26-0.74.13.1
    SUSESUSE Linux Enterprise Point of Sale 11-SP3
    • openldap2 – < 2.4.26-0.74.13.1
    • 2.4.26-0.74.13.1
    SUSESUSE Linux Enterprise Server 11-SECURITY
    • openldap2-client-openssl1 – < 2.4.26-0.74.13.1
    • 2.4.26-0.74.13.1
    SUSESUSE Linux Enterprise Server 11-SP4-LTSS
    • openldap2 – < 2.4.26-0.74.13.1
    • 2.4.26-0.74.13.1
    SUSESUSE Linux Enterprise Server 12-SP2-BCL
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 12-SP2-LTSS
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 12-SP3-BCL
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 12-SP3-LTSS
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 12-SP4
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 12-SP5
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server 15-LTSS
    • openldap2 – < 2.4.46-9.31.1
    • 2.4.46-9.31.1
    SUSESUSE Linux Enterprise Server for SAP 12-SP2
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server for SAP 12-SP3
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE Linux Enterprise Server for SAP 15
    • openldap2 – < 2.4.46-9.31.1
    • 2.4.46-9.31.1
    SUSESUSE OpenStack Cloud 7
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE OpenStack Cloud 8
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    SUSESUSE OpenStack Cloud Crowbar 8
    • openldap2 – < 2.4.41-18.71.2
    • 2.4.41-18.71.2
    opensuseopenldap2
    • < 2.4.41-18.71.2
    • < 2.4.46-9.31.1
    • < 2.4.26-0.74.13.1
    • < 2.4.46-lp151.10.12.1
    • 2.4.41-18.71.2
    • 2.4.46-9.31.1
    • 2.4.26-0.74.13.1
    • 2.4.46-lp151.10.12.1

    Vendors and products

    Weakness classes (CWE)

    • CWE-349Acceptance of Extraneous Untrusted Data With Trusted Data

      Base

      The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.

      Entry at MITRE CWE-349

    Public exploit references

    Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

    Public exploit references
    Reference tagged as exploitbugzilla.suse.com (opens in a new tab)PoC (publicly reported)reported, not verified—

    References & sources

    • bugzilla.suse.comshow_bug.cgi?id=1172698x_refsource_CONFIRM, Exploit, Issue tracking, Vendor advisory
    Embed badge

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    Badge preview for CVE-2020-8023
    <a href="https://intel.neosec.eu/en/cve/CVE-2020-8023"><img src="https://intel.neosec.eu/badge/cve/CVE-2020-8023.svg?lang=en" alt="CVE-2020-8023 – NEOSEC Intel" height="20"></a>