CVE-2010-2023

NameCVE-2010-2023
Descriptiontransports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's 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
exim4 (PTS)buster4.92-8+deb10u6fixed
buster (security)4.92-8+deb10u9fixed
bullseye (security), bullseye4.94.2-7+deb11u2fixed
bookworm, bookworm (security)4.96-15+deb12u4fixed
sid, trixie4.97-8fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
exim4source(unstable)4.72-1low

Notes

[lenny] - exim4 <no-dsa> (Minor issue)

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