Descriptionip-up in ppp-udeb 2.4.4rel on Debian GNU/Linux allows local users to overwrite arbitrary files via a symlink attack on the /tmp/resolv.conf.tmp temporary 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
ppp (PTS)buster, buster (security)2.4.7-2+4.1+deb10u1vulnerable
sid, trixie, bookworm2.4.9-1+1.1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


insecure temp file handling in udeb is not an issue, since it is during the installation

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