PT-2021-6720 · Libavif · Libavif

Published 2021-06-30 · Updated 2021-07-06 · CVE-2020-36407

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libavif versions 0.8.0 through 0.8.1

Description The issue is related to an out-of-bounds write in the avifDecoderDataFillImageGrid function of the libavif library, which is used for encoding and decoding .avif files. This can allow a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.

Recommendations For libavif versions 0.8.0 and 0.8.1, consider disabling the avifDecoderDataFillImageGrid 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

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2022-02090

CVE-2020-36407

Affected Products

Libavif

References · 8

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24811 · Exploit
• https://github.com/AOMediaCodec/libavif/commit/0a8e7244d494ae98e9756355dfbfb6697ded2ff9 · Patch
• https://osv.dev/vulnerability/CVE-2020-36407 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-36407 · Security Note
• https://bdu.fstec.ru/vul/2022-02090 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-36407 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-36407 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libavif/OSV-2020-1597.yaml · Note