Vulnerability · Published Dec 13, 2021 · Assigned by mitre
CVE-2021-44847
Critical 9.8
In plain English
A critical-severity security flaw in the libtoxcore package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.1% (higher than 91% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)4.1%top 9.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libtoxcore | 0.2.13-1 | DEBIAN-CVE-2021-44847 |
| Debian:13 | libtoxcore | 0.2.13-1 | DEBIAN-CVE-2021-44847 |
| Debian:14 | libtoxcore | 0.2.13-1 | DEBIAN-CVE-2021-44847 |
| Ubuntu:22.04:LTS | libtoxcore | 0.2.13-1 | UBUNTU-CVE-2021-44847 |
Affected products (as reported)
References
- https://github.com/TokTok/c-toxcore/pull/1718 x_refsource_MISC
- FEDORA-2021-8026e9b394 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-8b746a32c5 vendor-advisory, x_refsource_FEDORA