ALAS-2015-577


Amazon Linux AMI Security Advisory: ALAS-2015-577
Advisory Release Date: 2015-08-04 17:55 Pacific
Severity: Medium

Issue Overview:

Fix a side-channel attack on data-dependent timing variations in modular exponentiation, which can potentially lead to an information leak. (CVE-2015-0837 )

Fix a side-channel attack which can potentially lead to an information leak. (CVE-2014-3591 )

Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than CVE-2013-4576 , which was fixed in ALAS-2014-278. (CVE-2014-5270 )


Affected Packages:

libgcrypt


Issue Correction:
Run yum update libgcrypt to update your system.

New Packages:
i686:
    libgcrypt-debuginfo-1.5.3-12.18.amzn1.i686
    libgcrypt-devel-1.5.3-12.18.amzn1.i686
    libgcrypt-1.5.3-12.18.amzn1.i686

src:
    libgcrypt-1.5.3-12.18.amzn1.src

x86_64:
    libgcrypt-devel-1.5.3-12.18.amzn1.x86_64
    libgcrypt-debuginfo-1.5.3-12.18.amzn1.x86_64
    libgcrypt-1.5.3-12.18.amzn1.x86_64