PT-2022-6565 · Ffjpeg · Ffjpeg

Cem Onat Karagun · Published 2022-02-08 · Updated 2023-08-17 · CVE-2021-44956

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions ffjpeg versions prior to 01.01.2021

Description The issue is related to a heap-based buffer overflow in the jfif decode function at ffjpeg/src/jfif.c, which could cause a Denial of Service by using a crafted jpeg file. This can be exploited by a remote attacker to cause a service disruption. The jfif decode() function is specifically vulnerable, potentially allowing an attacker to overflow a buffer in memory.

Recommendations For versions prior to 01.01.2021, as a temporary workaround, consider disabling the jfif decode() function until a patch is available. Restrict access to crafted jpeg files to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2023-02427

CVE-2021-44956

Affected Products

Ffjpeg

References · 5

• 🔥 https://github.com/rockcarry/ffjpeg/issues/43 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-44956 · Security Note
• https://bdu.fstec.ru/vul/2023-02427 · Security Note
• https://osv.dev/vulnerability/CVE-2021-44956 · Vendor Advisory
• https://t.me/cibsecurity/37010 · Telegram Post