Debian Security Advisory DSA 2908-1 (openssl - Security Update) Network Vulnerability

Summary

Multiple vulnerabilities have been discovered in OpenSSL. The following Common Vulnerabilities and Exposures project ids identify them: CVE-2010-5298 A read buffer can be freed even when it still contains data that is used later on, leading to a use-after-free. Given a race condition in a multi-threaded application it may permit an attacker to inject data from one connection into another or cause denial of service. CVE-2014-0076 ECDSA nonces can be recovered through the Yarom/Benger FLUSH+RELOAD cache side-channel attack. A third issue, with no CVE id, is the missing detection of the critical flag for the TSA extended key usage under certain cases. Additionally, this update checks for more services that might need to be restarted after upgrades of libssl, corrects the detection of apache2 and postgresql, and adds support for the 'libraries/restart-without-asking' debconf configuration. This allows services to be restarted on upgrade without prompting. The oldstable distribution (squeeze) is not affected by CVE-2010-5298 and it might be updated at a later time to address the remaining vulnerabilities.

Solution

For the stable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u7. For the testing distribution (jessie), these problems will be fixed soon. For the unstable distribution (sid), these problems have been fixed in version 1.0.1g-3. We recommend that you upgrade your openssl packages.

Insight

This package contains the openssl binary and related tools.

Affected

openssl on Debian Linux

Detection

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

References