Vulnerability DatabaseCVE-2020-6851
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CVE-2020-6851
Published:January 13, 2020
Updated:May 17, 2026
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.
Affected Packages
openjpeg (CONAN):
Affected version(s) =2.3.1 <2.4.0
Fix Suggestion:
Update to version 2.4.0
Related Resources (16)
https://access.redhat.com/errata/RHSA-2020:0262
https://security-tracker.debian.org/tracker/CVE-2020-6851
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-6851
https://access.redhat.com/errata/RHSA-2020:0274
https://security.alpinelinux.org/vuln/CVE-2020-6851
https://lists.debian.org/debian-lts-announce/2020/07/msg00008.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/
https://access.redhat.com/errata/RHSA-2020:0296
https://www.oracle.com/security-alerts/cpujul2020.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/
https://www.debian.org/security/2021/dsa-4882
https://lists.debian.org/debian-lts-announce/2020/01/msg00025.html
https://access.redhat.com/security/cve/CVE-2020-6851
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/
https://github.com/uclouvain/openjpeg/issues/1228
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Write
CWE-787
EPSS
Base Score:
1.43