Several remote vulnerabilities have been discovered in the GNU privacy guard, a free PGP replacement, which may lead to the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems:
Werner Koch discovered that a buffer overflow in a sanitising function may lead to execution of arbitrary code when running gnupg interactively.
Tavis Ormandy discovered that parsing a carefully crafted OpenPGP packet may lead to the execution of arbitrary code, as a function pointer of an internal structure may be controlled through the decryption routines.
For the stable distribution (sarge) these problems have been fixed in version 1.4.1-1.sarge6.
For the upcoming stable distribution (etch) these problems have been fixed in version 1.4.6-1.
For the unstable distribution (sid) these problems have been fixed in version 1.4.6-1.
We recommend that you upgrade your gnupg packages.
MD5 checksums of the listed files are available in the original advisory.