Published: 02/05/2005 Updated: 10/12/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

The integrity check feature in OpenPGP, when handling a message that was encrypted using cipher feedback (CFB) mode, allows remote malicious users 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.

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gnupg gnupg

Serge Mister and Robert Zuccherato discovered a weakness of the symmetrical encryption algorithm of gnupg When decrypting a message, gnupg uses a feature called “quick scan”; this can quickly check whether the key that is used for decryption is (probably) the right one, so that wrong keys can be determined quickly without decrypting the whole ...

CWE-326 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 https://usn.ubuntu.com/170-1/https://nvd.nist.gov https://www.kb.cert.org/vuls/id/303094

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CVE-2005-0366

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