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Vulnerabilities / CVE-2021-44847

critical

CVE-2021-44847

A stack-based buffer overflow in handle_request function in DHT.c in t ...

Published Modified CWE 682
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium).

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 and fixed versions

SourcePackageFixed in
debian 10libtoxcoreno fix listed
debian 11libtoxcoreno fix listed
debian 12libtoxcore0.2.13-1
debian 13libtoxcore0.2.13-1
debian 14libtoxcore0.2.13-1
echolibtoxcore0.2.13-1
ubuntu 20.04-ESMlibtoxcoreno fix listed
ubuntu 22.04libtoxcore0.2.13-1
ubuntu 22.10libtoxcore0.2.13-1
ubuntu 23.04libtoxcore0.2.13-1
ubuntu 23.10libtoxcore0.2.13-1
ubuntu 24.04libtoxcore0.2.13-1
Show all 17 entries from 17 sources
SourcePackageFixed in
debian 10libtoxcoreno fix listed
debian 11libtoxcoreno fix listed
debian 12libtoxcore0.2.13-1
debian 13libtoxcore0.2.13-1
debian 14libtoxcore0.2.13-1
echolibtoxcore0.2.13-1
ubuntu 20.04-ESMlibtoxcoreno fix listed
ubuntu 22.04libtoxcore0.2.13-1
ubuntu 22.10libtoxcore0.2.13-1
ubuntu 23.04libtoxcore0.2.13-1
ubuntu 23.10libtoxcore0.2.13-1
ubuntu 24.04libtoxcore0.2.13-1
ubuntu 24.10libtoxcore0.2.13-1
ubuntu 25.04libtoxcore0.2.13-1
ubuntu 25.10libtoxcore0.2.13-1
ubuntu 26.04libtoxcore0.2.13-1
ubuntu 26.10libtoxcore0.2.13-1

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.