VDB
CVE-2020-21677
CVE-2020-21677
PUBLISHED
A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.
EPSS 0.28% · 51.5th percentile
Risk Scores
EPSS Score
0.28%
51.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | libsixel | 1.5.2-2, 1.4.2-1, 0 |
| Ubuntu:20.04:LTS | libsixel | 1.8.2-2.1, 1.8.2-1, 0 |
| Ubuntu:25.10 | libsixel | 0, 1.10.5-1 |
| Ubuntu:18.04:LTS | libsixel | 0, 1.7.3-1, 1.5.2-2 |
| Ubuntu:24.04:LTS | libsixel | 0, 1.10.3-3build1, 1.10.3-3 |
| Ubuntu:22.04:LTS | libsixel | 1.8.6-2, 0, 1.10.3-3 |
Exploit Intelligence
Timeline
- Aug 10, 2021 CVE Published
- Aug 11, 2021 EPSS Score
- Oct 9, 2021 EPSS Score
- Dec 6, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 3, 2022 EPSS Score
- Apr 3, 2022 EPSS Score
- May 31, 2022 EPSS Score
- Jul 30, 2022 EPSS Score
- Sep 27, 2022 EPSS Score
- Nov 25, 2022 EPSS Score
- Jan 22, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-21677 third-party-advisory
- https://github.com/saitoha/libsixel/issues/123 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-21677 third-party-advisory