PT-2021-22606 · Libjpeg · Libjpeg

Published 2021-09-20 · Updated 2021-09-24 · CVE-2021-39519

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 through 2020021

Description: An issue exists in the function BlockBitmapRequester::PullQData() located in blockbitmaprequester.cpp, allowing an attacker to cause Denial of Service due to a NULL pointer dereference.

Recommendations: For versions through 2020021, consider disabling the BlockBitmapRequester::PullQData() function as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-39519

Affected Products

Libjpeg

References · 9

• 🔥 https://github.com/thorfdbg/libjpeg/issues/28 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39519 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39519 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-39519 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-39519 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39519 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-39519 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-39519 · Security Note
• https://t.me/cibsecurity/29129 · Telegram Post