Format string vulnerability in gpgkeyshkp (experimental HKP interface) for the GnuPG (gpg) client 1.2.3 and earlier, and 1.3.3 and earlier, allows remote attackers or a malicious keyserver to cause a denial of service (crash) and possibly execute arbitrary code during key retrieval.

GnuPG (gpg) 1.0.3 does not properly check all signatures of a file containing multiple documents, which allows an attacker to modify contents of all documents but the first without detection.

Format string vulnerability in Gnu Privacy Guard (aka GnuPG or gpg) 1.05 and earlier can allow an attacker to gain privileges via format strings in the original filename that is stored in an encrypted file.