axiom-test.sh in axiom 20100701-1.1 uses tempfile to create a safe temporary file but appends a suffix to the original filename and writes to this new filename, which allows local users to overwrite arbitrary files via a symlink attack on the new filename.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-1640
• https://exchange.xforce.ibmcloud.com/vulnerabilities/90663
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=736358
• http://www.openwall.com/lists/oss-security/2014/01/22/3
• http://www.openwall.com/lists/oss-security/2014/01/22/4
• http://www.osvdb.org/102383