WinZip PKZIP weak password encryption algorithm
| winzip-pkzip-weak-encryption (11296) |  Low Risk |
Description:
The WinZip utility uses a weak encryption algorithm to password protected files. A local attacker, by reverse engineering the stream code generated by WinZip, could use brute force techniques to obtain passwords and gain unauthorized access to compressed files.
Platforms Affected:
- WinZip, WinZip 8.0
Remedy:
No remedy available as of November 29, 2008.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Fri Feb 07 2003 - 19:35:13 CST , Yet another plaintext attack to ZIP encryption scheme. at http://archives.neohapsis.com/archives/bugtraq/2003-02/0110.html.
- BID-6805: WinZip File Encryption Scheme Limited Key Space Vulnerability
- CVE-2003-1376: WinZip 8.0 uses weak random number generation for password protected ZIP files, which allows local users to brute force the encryption keys and extract the data from the zip file by guessing the state of the stream coder.
Reported:
Feb 08, 2003
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