GLSA 200409-18: cdrtools: Local root vulnerability in cdrecord if set SUID root

Title:cdrtools: Local root vulnerability in cdrecord if set SUID root
Bugs: #63187


cdrecord, if manually set SUID root, is vulnerable to a local root exploit allowing users to escalate privileges.


The cdrtools package is a set of tools for CD recording, including the popular cdrecord command-line utility.

Affected packages

Package Vulnerable Unaffected Architecture(s)
app-cdr/cdrtools <= 2.01_alpha37 >= 2.01_alpha37-r1 All supported architectures


Max Vozeler discovered that the cdrecord utility, when set to SUID root, fails to drop root privileges before executing a user-supplied RSH program. By default, Gentoo does not ship the cdrecord utility as SUID root and therefore is not vulnerable. However, many users (and CD-burning front-ends) set this manually after installation.


A local attacker could specify a malicious program using the $RSH environment variable and have it executed by the SUID cdrecord, resulting in root privileges escalation.


As a workaround, you could remove the SUID rights from your cdrecord utility :

    # chmod a-s /usr/bin/cdrecord


All cdrtools users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=app-cdr/cdrtools-2.01_alpha37-r1"
    # emerge ">=app-cdr/cdrtools-2.01_alpha37-r1"



This GLSA and any updates to it are available for viewing at the Gentoo Security Website:


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