CVE-2020-27796

NameCVE-2020-27796
DescriptionA heap-based buffer over-read was discovered in the invert_pt_dynamic function in p_lx_elf.cpp in UPX 4.0.0 via a crafted Mach-O file.
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
upx-ucl (PTS)jessie3.91-1vulnerable
stretch3.91-4vulnerable
buster3.95-1vulnerable
bullseye3.96-2vulnerable
bullseye (security)3.96-2+deb11u1vulnerable
sid, trixie4.2.4-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
upx-uclsource(unstable)4.2.2-1unimportant

Notes

https://github.com/upx/upx/issues/392
https://github.com/upx/upx/commit/73b854874e723f38e84e5ff57a9eeb99653ca74c

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