Vulnerability · Published Jan 25, 2022 · Assigned by mitre
CVE-2021-45340
Medium 6.5
In plain English
A medium-severity security flaw in the libsixel package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.9%top 39.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsixel | no fix listed | DEBIAN-CVE-2021-45340 |
| Debian:13 | libsixel | 1.10.5-1 | DEBIAN-CVE-2021-45340 |
| Debian:14 | libsixel | 1.10.5-1 | DEBIAN-CVE-2021-45340 |
| Debian:12 | libstb | no fix listed | DEBIAN-CVE-2021-45340 |
| Debian:13 | libstb | no fix listed | DEBIAN-CVE-2021-45340 |
| Debian:14 | libstb | no fix listed | DEBIAN-CVE-2021-45340 |
| Ubuntu:22.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2021-45340 |
| Ubuntu:24.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2021-45340 |
| Ubuntu:25.10 | libsixel | no fix listed | UBUNTU-CVE-2021-45340 |
| Ubuntu:26.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2021-45340 |
| Ubuntu:26.10 | libsixel | no fix listed | UBUNTU-CVE-2021-45340 |
Affected products (as reported)
References
- https://github.com/libsixel/libsixel/issues/51 x_refsource_MISC