Debian Security Advisory DSA 2950-1 (openssl - Security Update) Network Vulnerability

Summary

Multiple vulnerabilities have been discovered in OpenSSL: CVE-2014-0195 Jueri Aedla discovered that a buffer overflow in processing DTLS fragments could lead to the execution of arbitrary code or denial of service. CVE-2014-0221 Imre Rad discovered the processing of DTLS hello packets is susceptible to denial of service. CVE-2014-0224 KIKUCHI Masashi discovered that carefully crafted handshakes can force the use of weak keys, resulting in potential man-in-the-middle attacks. CVE-2014-3470 Felix Groebert and Ivan Fratric discovered that the implementation of anonymous ECDH ciphersuites is suspectible to denial of service. Additional information can be found at http://www.openssl.org/news/secadv_20140605.txt

Solution

For the stable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u10. All applications linked to openssl need to be restarted. You can use the tool checkrestart from the package debian-goodies to detect affected programs or reboot your system. There's also a forthcoming security update for the Linux kernel later the day (CVE-2014-3153 ), so you need to reboot anyway. Perfect timing, isn't it? For the unstable distribution (sid), these problems will be fixed soon. 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