CVE-2020-21048

moderate-risk
Published 2021-09-14

An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.

Do I need to act?

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0.41% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Libsixel Project

References (10)

Broken Link https://bitbucket.org/netbsd/pkgsrc/commits/6f0c011cbfccdffa635d04c84433b1a02687...
Release Notes https://github.com/saitoha/libsixel/blob/master/ChangeLog
Patch https://github.com/saitoha/libsixel/commit/cb373ab6614c910407c5e5a93ab935144e62b...
Exploit https://github.com/saitoha/libsixel/issues/73
Release Notes https://github.com/saitoha/libsixel/releases/tag/v1.8.4
Broken Link https://bitbucket.org/netbsd/pkgsrc/commits/6f0c011cbfccdffa635d04c84433b1a02687...
Release Notes https://github.com/saitoha/libsixel/blob/master/ChangeLog
Patch https://github.com/saitoha/libsixel/commit/cb373ab6614c910407c5e5a93ab935144e62b...
Exploit https://github.com/saitoha/libsixel/issues/73
Release Notes https://github.com/saitoha/libsixel/releases/tag/v1.8.4
31
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal