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Debian Security Advisory 2454-1

Debian Security Advisory 2454-1
Posted Apr 20, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2454-1 - Multiple vulnerabilities have been found in OpenSSL. Ivan Nestlerode discovered a weakness in the CMS and PKCS #7 implementations that could allow an attacker to decrypt data via a Million Message Attack (MMA). It was discovered that a NULL pointer could be dereferenced when parsing certain S/MIME messages, leading to denial of service. Tavis Ormandy, Google Security Team, discovered a vulnerability in the way DER-encoded ASN.1 data is parsed that can result in a heap overflow.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, debian
advisories | CVE-2012-0884, CVE-2012-1165, CVE-2012-2110
MD5 | b2f1f7c3eaeb890008741c9423318737

Debian Security Advisory 2454-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2454-1 security@debian.org
http://www.debian.org/security/ Raphael Geissert
April 19, 2012 http://www.debian.org/security/faq
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Package : openssl
Vulnerability : multiple
Problem type : remote
Debian-specific: no
CVE ID : CVE-2012-0884 CVE-2012-1165 CVE-2012-2110

Multiple vulnerabilities have been found in OpenSSL. The Common
Vulnerabilities and Exposures project identifies the following issues:

CVE-2012-0884

Ivan Nestlerode discovered a weakness in the CMS and PKCS #7
implementations that could allow an attacker to decrypt data
via a Million Message Attack (MMA).

CVE-2012-1165

It was discovered that a NULL pointer could be dereferenced
when parsing certain S/MIME messages, leading to denial of
service.

CVE-2012-2110

Tavis Ormandy, Google Security Team, discovered a vulnerability
in the way DER-encoded ASN.1 data is parsed that can result in
a heap overflow.


Additionally, the fix for CVE-2011-4619 has been updated to address an
issue with SGC handshakes.

For the stable distribution (squeeze), these problems have been fixed in
version 0.9.8o-4squeeze11.

For the testing distribution (wheezy), these problems will be fixed soon.

For the unstable distribution (sid), these problems have been fixed in
version 1.0.1a-1.

We recommend that you upgrade your openssl packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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