Yarom and Falkner discovered that RSA secret keys could be leaked via a side channel attack, where a malicious local user could obtain private key information from another user on the system. This update fixes this issue for the 1.4 series of GnuPG. GnuPG 2.x is affected through its use of the libgcrypt11 library, a fix for which will be published in DSA 2731.

For the oldstable distribution (squeeze), this problem has been fixed in version 1.4.10-4+squeeze2. For the stable distribution (wheezy), this problem has been fixed in version 1.4.12-7+deb7u1. For the unstable distribution (sid), this problem has been fixed in version 1.4.14-1. We recommend that you upgrade your gnupg packages.

GnuPG is GNU's tool for secure communication and data storage. It can be used to encrypt data and to create digital signatures. It includes an advanced key management facility and is compliant with the proposed OpenPGP Internet standard as described in RFC2440.

gnupg on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2013/dsa-2730.html

---

Updated on 2015-03-25