Out-of-bounds read in GIFLIB - CVE-2020-23922

Vulnerability identifier: #VU93876

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-23922

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to heap-based buffer over-read within the DumpScreen2RGB() function in gif2rgb.c. A remote attacker can pass a specially crafted file to the application and perform a denial of service attack.

GIFLIB
Amazon Linux AMI
openEuler
giflib
giflib-debuginfo
giflib-devel
giflib-debugsource
giflib-utils
giflib-help

Install update from vendor's website.

GIFLIB - update to 5.1.5
giflib - update to 5.2.1-9
giflib - update to 5.2.2-1
giflib-debuginfo - update to 5.2.2-1
giflib-devel - update to 5.2.2-1
giflib-debugsource - update to 5.2.2-1
giflib-utils - update to 5.2.2-1
giflib-help - update to 5.2.2-1

• https://sourceforge.net/p/giflib/bugs/151/
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
• https://cwe.mitre.org/data/definitions/126.html

• Denial of service in giflib
• openEuler update for giflib
• Amazon Linux AMI update for giflib