Buffer overflow in Saitoha Libsixel
CVE-2020-21050
Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (74.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cwe.mitre.org/data/definitions/121.html (Technical Description)
- github.com/saitoha/libsixel/blob/master/ChangeLog (Third Party Advisory, Release Notes)
- github.com/saitoha/libsixel/releases/tag/v1.8.5 (Third Party Advisory, Release Notes)
- github.com/saitoha/libsixel/issues/75 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee (Patch, Third Party Advisory)
- bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae (Broken Link)
Frequently asked questions
- What is CVE-2020-21050?
- CVE-2020-21050 is a medium-severity vulnerability in Saitoha Libsixel, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-14.
- How severe is CVE-2020-21050?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-21050 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.