Debian Security Advisory
DSA-061-1 gnupg -- printf format attack
- Date Reported:
- 16 Jun 2001
- Affected Packages:
- Security database references:
- In the Bugtraq database (at SecurityFocus): BugTraq ID 2797.
In Mitre's CVE dictionary: CVE-2001-0522.
- More information:
The version of GnuPG (GNU Privacy Guard, an OpenPGP implementation)
as distributed in Debian GNU/Linux 2.2 suffers from two problems:
- fish stiqz reported on bugtraq that there was a printf format problem in the do_get() function: it printed a prompt which included the filename that was being decrypted without checking for possible printf format attacks. This could be exploited by tricking someone into decrypting a file with a specially crafted filename.
- The second bug is related to importing secret keys: when gnupg imported a secret key it would immediately make the associated public key fully trusted which changes your web of trust without asking for a confirmation. To fix this you now need a special option to import a secret key.
Both problems have been fixed in version 1.0.6-0potato1.
- Fixed in:
Debian GNU/Linux 2.2 (potato)
- Intel IA-32:
- Motorola 680x0:
- Sun Sparc:
MD5 checksums of the listed files are available in the original advisory.