src/common/latex.py in Gajim 0.15 allows local users to overwrite arbitrary files via a symlink attack on a temporary latex file, related to the get_tmpfile_name function.
Weakness
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gajim | Gajim | 0.15 (including) | 0.15 (including) |
| Gajim | Ubuntu | artful | * |
| Gajim | Ubuntu | hardy | * |
| Gajim | Ubuntu | lucid | * |
| Gajim | Ubuntu | natty | * |
| Gajim | Ubuntu | oneiric | * |
| Gajim | Ubuntu | precise | * |
| Gajim | Ubuntu | quantal | * |
| Gajim | Ubuntu | raring | * |
| Gajim | Ubuntu | saucy | * |
| Gajim | Ubuntu | upstream | * |
| Gajim | Ubuntu | utopic | * |
| Gajim | Ubuntu | vivid | * |
| Gajim | Ubuntu | wily | * |
| Gajim | Ubuntu | yakkety | * |
| Gajim | Ubuntu | zesty | * |
Potential Mitigations
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/132.html
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/35.html
- https://cwe.mitre.org/data/definitions/76.html
References
- http://hg.gajim.org/gajim/rev/f046e4aaf7d4
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079169.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079237.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079241.html
- http://secunia.com/advisories/48695
- http://secunia.com/advisories/48794
- http://security.gentoo.org/glsa/glsa-201208-04.xml
- http://www.openwall.com/lists/oss-security/2012/04/10/15
- http://www.openwall.com/lists/oss-security/2012/04/10/6
- http://www.securityfocus.com/bid/53017
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74869
- https://trac.gajim.org/changeset/13759/src/common/latex.py
- http://hg.gajim.org/gajim/rev/f046e4aaf7d4
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079169.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079237.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079241.html
- http://secunia.com/advisories/48695
- http://secunia.com/advisories/48794
- http://security.gentoo.org/glsa/glsa-201208-04.xml
- http://www.openwall.com/lists/oss-security/2012/04/10/15
- http://www.openwall.com/lists/oss-security/2012/04/10/6
- http://www.securityfocus.com/bid/53017
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74869
- https://trac.gajim.org/changeset/13759/src/common/latex.py