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==========================================================================
Ubuntu Security Notice USN-2537-1
March 19, 2015

openssl vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in OpenSSL.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

It was discovered that OpenSSL incorrectly handled malformed EC private key
files. A remote attacker could possibly use this issue to cause OpenSSL to
crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2015-0209)

Stephen Henson discovered that OpenSSL incorrectly handled comparing ASN.1
boolean types. A remote attacker could possibly use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2015-0286)

Emilia KÀsper discovered that OpenSSL incorrectly handled ASN.1 structure
reuse. A remote attacker could possibly use this issue to cause OpenSSL to
crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2015-0287)

Brian Carpenter discovered that OpenSSL incorrectly handled invalid
certificate keys. A remote attacker could possibly use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2015-0288)

Michal Zalewski discovered that OpenSSL incorrectly handled missing outer
ContentInfo when parsing PKCS#7 structures. A remote attacker could
possibly use this issue to cause OpenSSL to crash, resulting in a denial of
service, or execute arbitrary code. (CVE-2015-0289)

Robert Dugal and David Ramos discovered that OpenSSL incorrectly handled
decoding Base64 encoded data. A remote attacker could possibly use this
issue to cause OpenSSL to crash, resulting in a denial of service, or
execute arbitrary code. (CVE-2015-0292)

Sean Burford and Emilia KÀsper discovered that OpenSSL incorrectly handled
specially crafted SSLv2 CLIENT-MASTER-KEY messages. A remote attacker could
possibly use this issue to cause OpenSSL to crash, resulting in a denial of
service. (CVE-2015-0293)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.10:
  libssl1.0.0                     1.0.1f-1ubuntu9.4

Ubuntu 14.04 LTS:
  libssl1.0.0                     1.0.1f-1ubuntu2.11

Ubuntu 12.04 LTS:
  libssl1.0.0                     1.0.1-4ubuntu5.25

Ubuntu 10.04 LTS:
  libssl0.9.8                     0.9.8k-7ubuntu8.27

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2537-1
  CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288,
  CVE-2015-0289, CVE-2015-0292, CVE-2015-0293

Package Information:
  https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu9.4
  https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.11
  https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.25
  https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.27



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