DescriptionAn issue was discovered in Amanda 3.3.1. A user with backup privileges can trivially compromise a client installation. Amstar is an Amanda Application API script. It should not be run by users directly. It uses star to backup and restore data. It runs binaries with root permissions when parsing the command line argument --star-path.
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
amanda (PTS)buster1:3.5.1-2fixed
buster (security)1:3.5.1-2+deb10u2fixed
sid, trixie1:3.5.1-11.1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs

/usr/lib/amanda/application/amstar can only be run by members of the backup
group (which is root-equivalent due to being able to perform restores e.g.)

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