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AUSCERT External Security Bulletin Redistribution
ESB-2015.0603
libgcrypt11 security update
13 March 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: libgcrypt11
Publisher: Debian
Operating System: Debian GNU/Linux 7
Impact/Access: Access Privileged Data -- Console/Physical
Resolution: Patch/Upgrade
CVE Names: CVE-2015-0837 CVE-2014-3591
Reference: ESB-2015.0602
Original Bulletin:
http://www.debian.org/security/2015/dsa-3185
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Debian Security Advisory DSA-3185-1 security@debian.org
http://www.debian.org/security/ Alessandro Ghedini
March 12, 2015 http://www.debian.org/security/faq
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Package : libgcrypt11
CVE ID : CVE-2014-3591 CVE-2015-0837
Multiple vulnerabilities were discovered in libgcrypt:
CVE-2014-3591
The Elgamal decryption routine was susceptible to a side-channel
attack discovered by researchers of Tel Aviv University. Ciphertext
blinding was enabled to counteract it. Note that this may have a
quite noticeable impact on Elgamal decryption performance.
CVE-2015-0837
The modular exponentiation routine mpi_powm() was susceptible to a
side-channel attack caused by data-dependent timing variations when
accessing its internal pre-computed table.
For the stable distribution (wheezy), these problems have been fixed in
version 1.5.0-5+deb7u3.
We recommend that you upgrade your libgcrypt11 packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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