CVE-2020-18780

NameCVE-2020-18780
DescriptionA Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
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
nasm (PTS)bullseye2.15.05-1fixed
bookworm2.16.01-1fixed
sid, trixie2.16.03-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nasmsource(unstable)2.15.04-1unimportant

Notes

https://bugzilla.nasm.us/show_bug.cgi?id=3392634
https://bugzilla.nasm.us/show_bug.cgi?id=3392711
Crash in CLI tool, no security impact
https://github.com/netwide-assembler/nasm/commit/7c88289e222dc5ef9f53f9e86ecaab1924744b88 (nasm-2.15.04rc6)

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