CVE-2021-21843

Multiple exploitable integer overflow vulnerabilities exist 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 due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. After validating the number of ranges, at [41] the library will multiply the count by the size of the GF_SubsegmentRangeInfo structure. On a 32-bit platform, this multiplication can result in an integer overflow causing the space of the array being allocated to be less than expected. An attacker can convince a user to open a video to trigger this vulnerability.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.0

8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

2.02% chance of exploitation in the next 30 days, 80th percentile

Published

2021-08-18

Updated

2024-08-03

Proof-of-concept exploits (2)

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1297

References

• CVE Record
• NVD entry

Related

• CVE-2021-21842
• CVE-2021-21844
• CVE-2021-21841
• CVE-2021-21845
• CVE-2021-21840
• CVE-2021-21846