[SECURITY] [DLA 3681-1] amanda security update

Debian LTS Advisory DLA-3681-1 [email protected]
https://www.debian.org/lts/security/ Tobias Frost
December 03, 2023 https://wiki.debian.org/LTS

Package : amanda
Version : 1:3.5.1-2+deb10u2
CVE ID : CVE-2022-37703 CVE-2022-37705 CVE-2023-30577
Debian Bug : 1021017 1029829 1055253

Multiple vulnerabilties have been found in Amanda,a backup system
designed to archive many computers on a network to a single
large-capacity tape drive. The vulnerabilties potentially allows local
privilege escalation from the backup user to root or leak information
whether a directory exists in the filesystem.

CVE-2022-37703

In Amanda 3.5.1, an information leak vulnerability was found in the
calcsize SUID binary. An attacker can abuse this vulnerability to
know if a directory exists or not anywhere in the fs. The binary
will use `opendir()` as root directly without checking the path,
letting the attacker provide an arbitrary path.

CVE-2022-37705

A privilege escalation flaw was found in Amanda 3.5.1 in which the
backup user can acquire root privileges. The vulnerable component is
the runtar SUID program, which is a wrapper to run /usr/bin/tar with
specific arguments that are controllable by the attacker. This
program mishandles the arguments passed to tar binary.

CVE-2023-30577

The SUID binary "runtar" can accept the possibly malicious GNU tar
options if fed with some non-argument option starting with
"--exclude" (say --exclude-vcs). The following option will be
accepted as "good" and it could be an option passing some
script/binary that would be executed with root permissions.

For Debian 10 buster, these problems have been fixed in version
1:3.5.1-2+deb10u2.

We recommend that you upgrade your amanda packages.

For the detailed security status of amanda please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/amanda

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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