A remote overflow exists in Pavuk. The program fails to properly check nonce and realm fields which accompany a digest authentication challenge upon the receipt of a 401 (unauthorized) http error resulting in an overflow in sprintf() in the digest authentication handler. With a specially crafted response, an attacker can cause execution of arbitrary code resulting in a loss of confidentiality, integrity, and/or availability.
Classification
Location:
Remote / Network Access
Attack Type:
Input Manipulation
Impact:
Loss of Integrity
Exploit:
Exploit Public
Disclosure:
OSVDB Verified
Solution
Disable http digest authentication or upgrade to version 0.928r3 or higher, as it has been reported to fix this vulnerability.
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