CVE-2010-2431
First published: Thu Jun 17 2010(Updated: )
Quoting from the upstream bug report <a href="http://cups.org/str.php?L3510">http://cups.org/str.php?L3510</a>: directory that is writable by unprivileged processes. This is a latent privilege escalation vulnerability. It can be exploited only in the presence of other CUPS vulnerabilities. Why this is privilege escalation -------------------------------- This is privilege escalation, because an unprivileged process can trick the CUPS server into overwriting arbitrary files as root. Example: drwxrwxr-x 4 root lp /var/cache/cups -rw-r----- 1 root lp /var/cache/cups/remote.cache This file is opened with cupsFileOpen() which simply opens the file with open(filename, O_WRONLY | O_TRUNC | O_CREAT | O_LARGEFILE | O_BINARY, 0666). If a CUPS "external" program has a vulnerability, an attacker can use the group=lp privileges to replace /var/cache/cups/remote.cache with a symlink to a root-writable file. CUPS will then overwrite that file as root. A similar latent vulnerability exists for the state file /var/cache/cups/job.cache. Why this is a latent vulnerability ---------------------------------- This is a latent vulnerability, because there is no known exploit for CUPS "external" programs that run as user=lp, group=lp. The upstream fix looks more like a preventative fix as there does not seem to be anything exploitable here, so this looks like more a hardening than a response to an actual flaw.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple Cups | =1.1.20 | |
| Apple Cups | =1.1.5-2 | |
| Apple Cups | =1.3.9 | |
| Apple Cups | =1.1.14 | |
| Apple Cups | =1.3-rc2 | |
| Apple Cups | =1.1.6-1 | |
| Apple Cups | =1.1.18 | |
| Apple Cups | =1.1.12 | |
| Apple Cups | <=1.4.3 | |
| Apple Cups | =1.3.11 | |
| Apple Cups | =1.1.5-1 | |
| Apple Cups | =1.3.3 | |
| Apple Cups | =1.1.22 | |
| Apple Cups | =1.2.0 | |
| Apple Cups | =1.1.16 | |
| Apple Cups | =1.4.1 | |
| Apple Cups | =1.3.1 | |
| Apple Cups | =1.1.23-rc1 | |
| Apple Cups | =1.1.20-rc1 | |
| Apple Cups | =1.1.15 | |
| Apple Cups | =1.1.17 | |
| Apple Cups | =1.1.20-rc6 | |
| Apple Cups | =1.2.4 | |
| Apple Cups | =1.1.19-rc1 | |
| Apple Cups | =1.3.2 | |
| Apple Cups | =1.1.22-rc1 | |
| Apple Cups | =1.1.7 | |
| Apple Cups | =1.2-rc2 | |
| Apple Cups | =1.1.6-2 | |
| Apple Cups | =1.3-b1 | |
| Apple Cups | =1.1.3 | |
| Apple Cups | =1.2.3 | |
| Apple Cups | =1.1.21 | |
| Apple Cups | =1.4.0 | |
| Apple Cups | =1.2.9 | |
| Apple Cups | =1.2.10 | |
| Apple Cups | =1.1.4 | |
| Apple Cups | =1.1.23 | |
| Apple Cups | =1.2.6 | |
| Apple Cups | =1.2-b1 | |
| Apple Cups | =1.3.8 | |
| Apple Cups | =1.1.20-rc4 | |
| Apple Cups | =1.1.19 | |
| Apple Cups | =1.1 | |
| Apple Cups | =1.3.4 | |
| Apple Cups | =1.1.8 | |
| Apple Cups | =1.1.5 | |
| Apple Cups | =1.2.1 | |
| Apple Cups | =1.2-rc3 | |
| Apple Cups | =1.1.2 | |
| Apple Cups | =1.3.10 | |
| Apple Cups | =1.1.13 | |
| Apple Cups | =1.1.19-rc4 | |
| Apple Cups | =1.1.9-1 | |
| Apple Cups | =1.2.12 | |
| Apple Cups | =1.1.21-rc2 | |
| Apple Cups | =1.2-b2 | |
| Apple Cups | =1.2.7 | |
| Apple Cups | =1.1.6-3 | |
| Apple Cups | =1.1.20-rc5 | |
| Apple Cups | =1.1.9 | |
| Apple Cups | =1.3.7 | |
| Apple Cups | =1.1.19-rc5 | |
| Apple Cups | =1.2-rc1 | |
| Apple Cups | =1.1.1 | |
| Apple Cups | =1.2.8 | |
| Apple Cups | =1.2.2 | |
| Apple Cups | =1.4.2 | |
| Apple Cups | =1.1.10 | |
| Apple Cups | =1.2.11 | |
| Apple Cups | =1.1.22-rc2 | |
| Apple Cups | =1.1.21-rc1 | |
| Apple Cups | =1.3-rc1 | |
| Apple Cups | =1.1.11 | |
| Apple Cups | =1.1.19-rc3 | |
| Apple Cups | =1.1.6 | |
| Apple Cups | =1.1.10-1 | |
| Apple Cups | =1.3.0 | |
| Apple Cups | =1.3.5 | |
| Apple Cups | =1.3.6 | |
| Apple Cups | =1.1.20-rc2 | |
| Apple Cups | =1.1.20-rc3 | |
| Apple Cups | =1.2.5 | |
| Apple Cups | =1.1.19-rc2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://cups.org/articles.php?L596
- http://cups.org/str.php?L3510
- http://rhn.redhat.com/errata/RHSA-2010-0811.html
- https://bugzilla.redhat.com/show_bug.cgi?id=605397
- http://www.vupen.com/english/advisories/2010/2856
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:234
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:232
- http://www.vupen.com/english/advisories/2011/0535
- http://secunia.com/advisories/43521
- http://www.debian.org/security/2011/dsa-2176
- http://security.gentoo.org/glsa/glsa-201207-10.xml
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=605399
- http://admin.fedoraproject.org/updates/cups-1.4.4-1.fc13
- http://admin.fedoraproject.org/updates/cups-1.4.4-1.fc12
- http://admin.fedoraproject.org/updates/cups-1.4.4-1.fc11
- https://access.redhat.com/security/cve/CVE-2010-2431
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2431
- http://admin.fedoraproject.org/updates/cups-1.4.4-4.fc13
- https://rhn.redhat.com/errata/RHSA-2010-0811.html
- collector/nvd-historical
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/remedy
- agent/severity
- agent/author
- agent/references
- agent/last-modified-date
- agent/description
- agent/tags
- agent/event
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2010-2431
- vendor/apple
- canonical/apple cups
- version/apple cups/1.1.20
- version/apple cups/1.1.5-2
- version/apple cups/1.3.9
- version/apple cups/1.1.14
- version/apple cups/1.3-rc2
- version/apple cups/1.1.6-1
- version/apple cups/1.1.18
- version/apple cups/1.1.12
- version/apple cups/1.4.3
- version/apple cups/1.3.11
- version/apple cups/1.1.5-1
- version/apple cups/1.3.3
- version/apple cups/1.1.22
- version/apple cups/1.2.0
- version/apple cups/1.1.16
- version/apple cups/1.4.1
- version/apple cups/1.3.1
- version/apple cups/1.1.23-rc1
- version/apple cups/1.1.20-rc1
- version/apple cups/1.1.15
- version/apple cups/1.1.17
- version/apple cups/1.1.20-rc6
- version/apple cups/1.2.4
- version/apple cups/1.1.19-rc1
- version/apple cups/1.3.2
- version/apple cups/1.1.22-rc1
- version/apple cups/1.1.7
- version/apple cups/1.2-rc2
- version/apple cups/1.1.6-2
- version/apple cups/1.3-b1
- version/apple cups/1.1.3
- version/apple cups/1.2.3
- version/apple cups/1.1.21
- version/apple cups/1.4.0
- version/apple cups/1.2.9
- version/apple cups/1.2.10
- version/apple cups/1.1.4
- version/apple cups/1.1.23
- version/apple cups/1.2.6
- version/apple cups/1.2-b1
- version/apple cups/1.3.8
- version/apple cups/1.1.20-rc4
- version/apple cups/1.1.19
- version/apple cups/1.1
- version/apple cups/1.3.4
- version/apple cups/1.1.8
- version/apple cups/1.1.5
- version/apple cups/1.2.1
- version/apple cups/1.2-rc3
- version/apple cups/1.1.2
- version/apple cups/1.3.10
- version/apple cups/1.1.13
- version/apple cups/1.1.19-rc4
- version/apple cups/1.1.9-1
- version/apple cups/1.2.12
- version/apple cups/1.1.21-rc2
- version/apple cups/1.2-b2
- version/apple cups/1.2.7
- version/apple cups/1.1.6-3
- version/apple cups/1.1.20-rc5
- version/apple cups/1.1.9
- version/apple cups/1.3.7
- version/apple cups/1.1.19-rc5
- version/apple cups/1.2-rc1
- version/apple cups/1.1.1
- version/apple cups/1.2.8
- version/apple cups/1.2.2
- version/apple cups/1.4.2
- version/apple cups/1.1.10
- version/apple cups/1.2.11
- version/apple cups/1.1.22-rc2
- version/apple cups/1.1.21-rc1
- version/apple cups/1.3-rc1
- version/apple cups/1.1.11
- version/apple cups/1.1.19-rc3
- version/apple cups/1.1.6
- version/apple cups/1.1.10-1
- version/apple cups/1.3.0
- version/apple cups/1.3.5
- version/apple cups/1.3.6
- version/apple cups/1.1.20-rc2
- version/apple cups/1.1.20-rc3
- version/apple cups/1.2.5
- version/apple cups/1.1.19-rc2