CVE-2015-3315

Automatic Bug Reporting Tool (ABRT) allows local users to read, change the ownership of, or have other unspecified impact on arbitrary files via a symlink attack on (1) /var/tmp/abrt//maps, (2) /tmp/jvm-/hs_error.log, (3) /proc/*/exe, (4) /etc/os-release in a chroot, or (5) an unspecified root directory related to librpm.

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

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://rhn.redhat.com/errata/RHSA-2015-1083.html
• http://rhn.redhat.com/errata/RHSA-2015-1210.html
• http://www.openwall.com/lists/oss-security/2015/04/14/4
• http://www.openwall.com/lists/oss-security/2015/04/16/12
• http://www.securityfocus.com/bid/75117
• https://bugzilla.redhat.com/show_bug.cgi?id=1211835
• https://github.com/abrt/abrt/commit/17cb66b13997b0159b4253b3f5722db79f476d68
• https://github.com/abrt/abrt/commit/4f2c1ddd3e3b81d2d5146b883115371f1cada9f9
• https://github.com/abrt/abrt/commit/80408e9e24a1c10f85fd969e1853e0f192157f92
• https://github.com/abrt/abrt/commit/d6e2f6f128cef4c21cb80941ae674c9842681aa7
• https://www.exploit-db.com/exploits/44097/