CVE-2005-0366: Weak Encryption
First published: Fri Feb 11 2005(Updated: )
The integrity check feature in OpenPGP, when handling a message that was encrypted using cipher feedback (CFB) mode, allows remote attackers to recover part of the plaintext via a chosen-ciphertext attack when the first 2 bytes of a message block are known, and an oracle or other mechanism is available to determine whether an integrity check failed.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Debian GnuPG | <1.4.1 |
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Reference Links
- http://www.pgp.com/library/ctocorner/openpgp.html
- http://eprint.iacr.org/2005/033.pdf
- http://www.gentoo.org/security/en/glsa/glsa-200503-29.xml
- http://www.kb.cert.org/vuls/id/303094
- http://www.securityfocus.com/bid/12529
- http://securitytracker.com/id?1013166
- http://eprint.iacr.org/2005/033
- http://www.novell.com/linux/security/advisories/2005_07_sr.html
- http://www.osvdb.org/13775
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:057
Frequently Asked Questions
What is the severity of CVE-2005-0366?
CVE-2005-0366 is considered a high severity vulnerability due to its potential to allow remote attackers to recover plaintext data.
How do I fix CVE-2005-0366?
To fix CVE-2005-0366, upgrade to a version of GnuPG newer than 1.4.1 that addresses this vulnerability.
What type of attack does CVE-2005-0366 allow?
CVE-2005-0366 allows attackers to perform a chosen-ciphertext attack to recover part of the plaintext of encrypted messages.
Which versions of GnuPG are affected by CVE-2005-0366?
CVE-2005-0366 affects GnuPG versions up to but not including 1.4.1.
What is the cause of CVE-2005-0366?
CVE-2005-0366 is caused by weaknesses in the integrity check feature when handling messages encrypted with cipher feedback mode.
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