USN-1424-1: OpenSSL vulnerabilities

Publication date

19 April 2012

Overview

An application using OpenSSL could be made to crash or run programs if it opened a specially crafted file.


Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools

Details

It was discovered that OpenSSL could be made to dereference a NULL pointer
when processing S/MIME messages. A remote attacker could use this to cause
a denial of service. These issues did not affect Ubuntu 8.04 LTS.
(CVE-2006-7250, CVE-2012-1165)

Tavis Ormandy discovered that OpenSSL did not properly perform bounds
checking when processing DER data via BIO or FILE functions. A remote
attacker could trigger this flaw in services that used SSL to cause a
denial of service or possibly execute arbitrary code with application
privileges. (CVE-2012-2110)

It was discovered that OpenSSL could be made to dereference a NULL pointer
when processing S/MIME messages. A remote attacker could use this to cause
a denial of service. These issues did not affect Ubuntu 8.04 LTS.
(CVE-2006-7250, CVE-2012-1165)

Tavis Ormandy discovered that OpenSSL did not properly perform bounds
checking when processing DER data via BIO or FILE functions. A remote
attacker could trigger this flaw in services that used SSL to cause a
denial of service or possibly execute arbitrary code with application
privileges. (CVE-2012-2110)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
8.04 hardy libssl0.9.8 –  0.9.8g-4ubuntu3.17
11.10 oneiric libssl1.0.0 –  1.0.0e-2ubuntu4.4
11.04 natty libssl0.9.8 –  0.9.8o-5ubuntu1.4
10.04 lucid libssl0.9.8 –  0.9.8k-7ubuntu8.10

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