CVE-2020-23911

NameCVE-2020-23911
DescriptionAn issue was discovered in asn1c through v0.9.28. A NULL pointer dereference exists in the function _default_error_logger() located in asn1fix.c. It allows an attacker to cause Denial of Service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
asn1c (PTS)jessie0.9.24+dfsg-1vulnerable
stretch0.9.27+dfsg-5vulnerable
buster, bullseye0.9.28+dfsg-3vulnerable
sid, trixie, bookworm0.9.28+dfsg-5vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
asn1csource(unstable)(unfixed)unimportant

Notes

Crash in CLI tool, no security impact
https://github.com/vlm/asn1c/issues/394

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