Security Information / 2014 / Security Information -- DSA-2950-1 openssl

Debian Security Advisory

DSA-2950-1 openssl -- security update

Date Reported:

05 Jun 2014

Affected Packages:

openssl

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2014-0195, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470.

More information:

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

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.