| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200409-18"> |
| <title>cdrtools: Local root vulnerability in cdrecord if set SUID root</title> |
| <synopsis> |
| cdrecord, if manually set SUID root, is vulnerable to a local root exploit |
| allowing users to escalate privileges. |
| </synopsis> |
| <product type="ebuild">cdrtools</product> |
| <announced>September 14, 2004</announced> |
| <revised>September 14, 2004: 01</revised> |
| <bug>63187</bug> |
| <access>local</access> |
| <affected> |
| <package name="app-cdr/cdrtools" auto="yes" arch="*"> |
| <unaffected range="ge">2.01_alpha37-r1</unaffected> |
| <unaffected range="rge">2.01_alpha28-r2</unaffected> |
| <vulnerable range="le">2.01_alpha37</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| The cdrtools package is a set of tools for CD recording, including the |
| popular cdrecord command-line utility. |
| </p> |
| </background> |
| <description> |
| <p> |
| 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. |
| </p> |
| </description> |
| <impact type="high"> |
| <p> |
| 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. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| As a workaround, you could remove the SUID rights from your cdrecord |
| utility : |
| </p> |
| <code> |
| # chmod a-s /usr/bin/cdrecord</code> |
| </workaround> |
| <resolution> |
| <p> |
| All cdrtools users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge sync |
| |
| # emerge -pv ">=app-cdr/cdrtools-2.01_alpha37-r1" |
| # emerge ">=app-cdr/cdrtools-2.01_alpha37-r1"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0806">CAN-2004-0806</uri> |
| </references> |
| <metadata tag="requester" timestamp="Tue, 14 Sep 2004 07:01:02 +0000"> |
| jaervosz |
| </metadata> |
| <metadata tag="submitter" timestamp="Tue, 14 Sep 2004 15:13:17 +0000"> |
| koon |
| </metadata> |
| <metadata tag="bugReady" timestamp="Tue, 14 Sep 2004 20:25:30 +0000"> |
| jaervosz |
| </metadata> |
| </glsa> |