CVE-2021-44847
A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.95%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the process or potentially execute arbitrary code via a network packet.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.95% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-682
- Affected
- toktok/toxcore · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://github.com/TokTok/c-toxcore/pull/1718Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S7EBS3NIRYJ7V3PTNINP3PJSVUHGZTGA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLTKINSPO5T65LB3ZASDPCREKUE22RYE/
- https://github.com/TokTok/c-toxcore/pull/1718Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S7EBS3NIRYJ7V3PTNINP3PJSVUHGZTGA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLTKINSPO5T65LB3ZASDPCREKUE22RYE/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.