CVE-2021-45423

NameCVE-2021-45423
DescriptionA Buffer Overflow vulnerabilityexists in Pev 0.81 via the pe_exports function from exports.c.. The array offsets_to_Names is dynamically allocated on the stack using exp->NumberOfFunctions as its size. However, the loop uses exp->NumberOfNames to iterate over it and set its components value. Therefore, the loop code assumes that exp->NumberOfFunctions is greater than ordinal at each iteration. This can lead to arbitrary code execution.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1034725

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pev (PTS)buster0.80-4fixed
bullseye0.81-3+deb11u1fixed
bookworm0.81-9fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pevsourcebuster(not affected)
pevsourcebullseye0.81-3+deb11u1
pevsource(unstable)0.81-91034725

Notes

[buster] - pev <not-affected> (Vulnerable code introduced later)
https://github.com/merces/libpe/issues/35
https://github.com/merces/libpe/commit/9b5fedc37ccbcd23695a0e97c0fe46c999e26100
https://github.com/merces/libpe/commit/8960f7d710c4d1a43badd2bbf273721248b864f8

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