USN-1424-1: OpenSSL vulnerabilities

Releases

• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.04
• Ubuntu 8.04

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)

Update instructions

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

Ubuntu 8.04

• libssl0.9.8 - 0.9.8g-4ubuntu3.17

Ubuntu 11.10

• libssl1.0.0 - 1.0.0e-2ubuntu4.4

Ubuntu 11.04

• libssl0.9.8 - 0.9.8o-5ubuntu1.4

Ubuntu 10.04

• libssl0.9.8 - 0.9.8k-7ubuntu8.10

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

References

• CVE-2006-7250
• CVE-2012-2110
• CVE-2012-1165