PT-2021-22603 · Libjpeg · Libjpeg

Published 2021-09-20 · Updated 2021-09-24 · CVE-2021-39516

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: libjpeg versions prior to 2020021

Description: An issue exists in the function HuffmanDecoder::Get() located in huffmandecoder.hpp, which allows an attacker to cause Denial of Service due to a NULL pointer dereference.

Recommendations: For versions prior to 2020021, update to a version that contains a fix for this issue to prevent Denial of Service attacks. As a temporary workaround, consider restricting access to the HuffmanDecoder::Get() function until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-39516

Affected Products

Libjpeg

References · 8

• 🔥 https://github.com/thorfdbg/libjpeg/issues/42 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-39516 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-39516 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-39516 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39516 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39516 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-39516 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39516 · Vendor Advisory