Vulnerability · Published Apr 12, 2020 · Assigned by mitre
CVE-2020-11721
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 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.9%top 38.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsixel | 1.10.3-1 | DEBIAN-CVE-2020-11721 |
| Debian:13 | libsixel | 1.10.3-1 | DEBIAN-CVE-2020-11721 |
| Debian:14 | libsixel | 1.10.3-1 | DEBIAN-CVE-2020-11721 |
| Ubuntu:22.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2020-11721 |
| Ubuntu:24.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2020-11721 |
| Ubuntu:25.10 | libsixel | no fix listed | UBUNTU-CVE-2020-11721 |
| Ubuntu:26.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2020-11721 |
| Ubuntu:26.10 | libsixel | no fix listed | UBUNTU-CVE-2020-11721 |
Affected products (as reported)
References
- https://github.com/saitoha/libsixel/issues/134 x_refsource_MISC