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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.5% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-12-13 00:53Z4 YR AGO
- Last updated
- 2024-08-04 04:32Z2 YR AGO
- Reserved
- 2021-12-13
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-682Incorrect CalculationPillar
- Data version
- 5.1
- Document digest
- bf122911a75c3587b47ae961a8f718f8d76b6156d464cd5290c36ec265c95754
05 Affected products
06 References
- github.comhttps://github.com/TokTok/c-toxcore/pull/1718
- lists.fedoraproject.orgFEDORA-2021-8026e9b394https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S7EBS3NIRYJ7V3PTNINP3PJSVUHGZTGA/
- lists.fedoraproject.orgFEDORA-2021-8b746a32c5https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLTKINSPO5T65LB3ZASDPCREKUE22RYE/
07 Fixed in
Arch Linux
- toxcore Fixed in 1:0.2.13-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- libtoxcore Fixed in 0.2.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libtoxcore Fixed in 0.2.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libtoxcore Fixed in 0.2.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- libtoxcore No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- libtoxcore Fixed in 0.2.13-1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.