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    CVE-2020-6851

    OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.

    Published:Jan 13, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 13, 2020
    EPSS Score:0.0122
    CVSS Score:7.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Oracle
    Product
    Georaster
    Vendor
    Oracle
    Product
    Outside In Technology
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Uclouvain
    Product
    Openjpeg

    Exploits

    https://github.com/uclouvain/openjpeg/issues/1228https://github.com/uclouvain/openjpeg/issues/1228

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-49975 (CVSS 7.5) — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of …
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    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-4775 (CVSS 7.8) — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerabili…
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    References

    https://access.redhat.com/errata/RHSA-2020:0262
    https://access.redhat.com/errata/RHSA-2020:0274
    https://access.redhat.com/errata/RHSA-2020:0296
    https://github.com/uclouvain/openjpeg/issues/1228
    https://lists.debian.org/debian-lts-announce/2020/01/msg00025.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00008.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/
    https://www.debian.org/security/2021/dsa-4882
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://access.redhat.com/errata/RHSA-2020:0262
    https://access.redhat.com/errata/RHSA-2020:0274
    https://access.redhat.com/errata/RHSA-2020:0296
    https://github.com/uclouvain/openjpeg/issues/1228
    https://lists.debian.org/debian-lts-announce/2020/01/msg00025.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00008.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/
    https://www.debian.org/security/2021/dsa-4882
    https://www.oracle.com/security-alerts/cpujul2020.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High