High severity · published Aug 25, 2021
CVE-2021-21849
An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1
8.8
CVSS
1.7%
EPSS
No
On KEV
Description
An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow when the library encounters an atom using the “tfra” FOURCC code due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
GP
Gpac · Gpac
1.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21849
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
Third Party Advisory
https://www.debian.org/security/2021/dsa-4966
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