Web Application Finger Printer (WAFP) 0.01-26c3 uses fixed pathnames under /tmp for temporary files and directories, which (1) allows local users to cause a denial of service (application outage) by creating a file with a pathname that the product expects is available for its own internal use, (2) allows local users to overwrite arbitrary files via symlink attacks on certain files in /tmp, (3) might allow local users to delete arbitrary files and directories via a symlink attack on a directory under /tmp, and (4) might make it easier for local users to obtain sensitive information by reading files in a directory under /tmp, related to (a) lib/wafp_pidify.rb, (b) utils/generate_wafp_fingerprint.sh, (c) utils/online_update.sh, and (d) utils/extract_from_db.sh.
CVSS Severity (version 2.0):
Impact Subscore: 6.4
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
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[oss-security] 20100427 wafp insecure temporary directory
[oss-security] 20100427 Re: wafp insecure temporary directory
Vulnerable software and versions