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    CVE-2019-6977

    gdImageColorMatch in gd_color_match.c in the GD Graphics Library (aka LibGD) 2.2.5, as used in the imagecolormatch function in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1, has a heap-based buffer overflow. This can be exploited by an attacker who is able to trigger imagecolormatch calls with crafted image data.

    Published:Dec 9, 2018
    Last Modified:Nov 21, 2024
    EPS:Jan 27, 2019
    EPSS Score:0.90016
    CVSS Score:8.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libgd
    Product
    Libgd
    Vendor
    Netapp
    Product
    Storage Automation Store
    Vendor
    Php
    Product
    Php
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    https://bugs.php.net/bug.php?id=77270https://bugs.php.net/bug.php?id=77270https://www.exploit-db.com/exploits/46677https://github.com/HORKimhab/CVE-2022-31626-CVE-2024-2961-CVE-2019-6977

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00025.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00031.html
    http://packetstormsecurity.com/files/152459/PHP-7.2-imagecolormatch-Out-Of-Band-Heap-Write.html
    http://php.net/ChangeLog-5.php
    http://php.net/ChangeLog-7.php
    http://www.securityfocus.com/bid/106731
    https://access.redhat.com/errata/RHSA-2019:2519
    https://access.redhat.com/errata/RHSA-2019:3299
    https://bugs.php.net/bug.php?id=77270
    https://lists.debian.org/debian-lts-announce/2019/01/msg00028.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WRUPZVT2MWFUEMVGTRAGDOBHLNMGK5R/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEYUUOW75YD3DENIPYMO263E6NL2NFHI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTXSLRZI5BCQT3H5KALG3DHUWUMNPDX2/
    https://security.gentoo.org/glsa/201903-18
    https://security.netapp.com/advisory/ntap-20190315-0003/
    https://usn.ubuntu.com/3900-1/
    https://www.debian.org/security/2019/dsa-4384
    https://www.exploit-db.com/exploits/46677/
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00025.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00031.html
    http://packetstormsecurity.com/files/152459/PHP-7.2-imagecolormatch-Out-Of-Band-Heap-Write.html
    http://php.net/ChangeLog-5.php
    http://php.net/ChangeLog-7.php
    http://www.securityfocus.com/bid/106731
    https://access.redhat.com/errata/RHSA-2019:2519
    https://access.redhat.com/errata/RHSA-2019:3299
    https://bugs.php.net/bug.php?id=77270
    https://lists.debian.org/debian-lts-announce/2019/01/msg00028.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WRUPZVT2MWFUEMVGTRAGDOBHLNMGK5R/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEYUUOW75YD3DENIPYMO263E6NL2NFHI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTXSLRZI5BCQT3H5KALG3DHUWUMNPDX2/
    https://security.gentoo.org/glsa/201903-18
    https://security.netapp.com/advisory/ntap-20190315-0003/
    https://usn.ubuntu.com/3900-1/
    https://www.debian.org/security/2019/dsa-4384
    https://www.exploit-db.com/exploits/46677/

    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