PT-2022-20939 · Libjpeg+1 · Libjpeg+1

Sleicasper · Published 2022-05-29 · Updated 2022-06-13 · CVE-2022-31796

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 version 1.63

Description The issue is a heap-based buffer over-read in the HierarchicalBitmapRequester::FetchRegion function, located in hierarchicalbitmaprequester.cpp. This occurs because the MCU size can differ between allocation and use, leading to potential memory access issues.

Recommendations For libjpeg version 1.63, consider applying a patch or fix that addresses the heap-based buffer over-read issue in the HierarchicalBitmapRequester::FetchRegion function. As a temporary workaround, restrict the use of the HierarchicalBitmapRequester::FetchRegion function until a patch is available.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2022-31796

Affected Products

Debian

Libjpeg

References · 10

• https://github.com/thorfdbg/libjpeg/commit/187035b9726710b4fe11d565c7808975c930895d · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-31796 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-31796 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-31796 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-31796 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-31796 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-31796 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-31796 · Security Note
• https://github.com/thorfdbg/libjpeg/issues/71 · Note
• https://t.me/cibsecurity/43680 · Telegram Post