Debian-LTS alert DLA-449-1 (botan1.10)

From:
    	     
 
Markus Koschany <apo@debian.org> 
To:
    	     
 
debian-lts-announce@lists.debian.org 
Subject:
    	     
 
[SECURITY] [DLA 449-1] botan1.10 security update 
Date:
    	     
 
Sat, 30 Apr 2016 13:48:27 +0200
Message-ID:
    	     
 
<57249B8B.8040703@debian.org>
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Package        : botan1.10
Version        : 1.10.5-1+deb7u1
CVE ID         : CVE-2014-9742 CVE-2015-5726 CVE-2015-5727
	         CVE-2015-7827 CVE-2016-2194 CVE-2016-2195
		 CVE-2016-2849

Several security vulnerabilities were found in botan1.10, a C++
library which provides support for many common cryptographic
operations, including encryption, authentication, X.509v3 certificates
and CRLs.

CVE-2014-9742
    A bug in Miller-Rabin primality testing was responsible for
    insufficient randomness.

CVE-2015-5726
    The BER decoder would crash due to reading from offset 0 of an
    empty vector if it encountered a BIT STRING which did not contain
    any data at all. This can be used to easily crash applications
    reading untrusted ASN.1 data, but does not seem exploitable for
    code execution.

CVE-2015-5727
    The BER decoder would allocate a fairly arbitrary amount of memory
    in a length field, even if there was no chance the read request
    would succeed. This might cause the process to run out of memory or
    invoke the OOM killer.

CVE-2015-7827
    Use constant time PKCS #1 unpadding to avoid possible side channel
    attack against RSA decryption

CVE-2016-2194
    Infinite loop in modular square root algorithm.
    The ressol function implementing the Tonelli-Shanks algorithm for
    finding square roots could be sent into a nearly infinite loop due
    to a misplaced conditional check. This could occur if a composite
    modulus is provided, as this algorithm is only defined for primes.
    This function is exposed to attacker controlled input via the
    OS2ECP function during ECC point decompression.

CVE-2016-2195
    Fix Heap overflow on invalid ECC point.

CVE-2016-2849
    Use constant time modular inverse algorithm to avoid possible
    side channel attack against ECDSA

For Debian 7 "Wheezy", these problems have been fixed in version
1.10.5-1+deb7u1.

We recommend that you upgrade your botan1.10 packages.

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