Vulnerability · Published Sep 17, 2021 · Assigned by mitre
CVE-2020-21547
High 8.8
In plain English
A high-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 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.1%top 35.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsixel | 1.8.6-1 | DEBIAN-CVE-2020-21547 |
| Debian:13 | libsixel | 1.8.6-1 | DEBIAN-CVE-2020-21547 |
| Debian:14 | libsixel | 1.8.6-1 | DEBIAN-CVE-2020-21547 |
Affected products (as reported)
References
- https://github.com/saitoha/libsixel/issues/114 x_refsource_MISC