CVE-2014-1859

(1) core/tests/test_memmap.py, (2) core/tests/test_multiarray.py, (3) f2py/f2py2e.py, and (4) lib/tests/test_io.py in NumPy before 1.8.1 allow local users to write to arbitrary files via a symlink attack on a temporary file.

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://lists.fedoraproject.org/pipermail/package-announce/2014-February/128358.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128781.html
• http://www.openwall.com/lists/oss-security/2014/02/08/3
• http://www.securityfocus.com/bid/65440
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737778
• https://bugzilla.redhat.com/show_bug.cgi?id=1062009
• https://exchange.xforce.ibmcloud.com/vulnerabilities/91317
• https://github.com/numpy/numpy/blob/maintenance/1.8.x/doc/release/1.8.1-notes.rst
• https://github.com/numpy/numpy/commit/0bb46c1448b0d3f5453d5182a17ea7ac5854ee15
• https://github.com/numpy/numpy/pull/4262