SecuritySpace - CVE-2021-21848

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CVE ID: CVE-2021-21848

Description: An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. The library will actually reuse the parser for atoms with the “stsz” FOURCC code when parsing atoms that use the “stz2” FOURCC code and can cause an integer overflow 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.

Test IDs: None available

Cross References: Common Vulnerability Exposure (CVE) ID: CVE-2021-21848
Debian Security Information: DSA-4966 (Google Search)
https://www.debian.org/security/2021/dsa-4966
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297

CVE ID:	CVE-2021-21848
Description:	An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. The library will actually reuse the parser for atoms with the “stsz” FOURCC code when parsing atoms that use the “stz2” FOURCC code and can cause an integer overflow 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.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-21848 Debian Security Information: DSA-4966 (Google Search) https://www.debian.org/security/2021/dsa-4966 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297