USN-1451-1: OpenSSL vulnerabilities

Releases

• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.04
• Ubuntu 8.04

Packages

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

Details

Ivan Nestlerode discovered that the Cryptographic Message Syntax
(CMS) and PKCS #7 implementations in OpenSSL returned early if RSA
decryption failed. This could allow an attacker to expose sensitive
information via a Million Message Attack (MMA). (CVE-2012-0884)

It was discovered that an integer underflow was possible when using
TLS 1.1, TLS 1.2, or DTLS with CBC encryption. This could allow a
remote attacker to cause a denial of service. (CVE-2012-2333)

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-4ubuntu3.19
• openssl - 0.9.8g-4ubuntu3.19

Ubuntu 12.04

• libssl1.0.0 - 1.0.1-4ubuntu5.2
• openssl - 1.0.1-4ubuntu5.2

Ubuntu 11.10

• libssl1.0.0 - 1.0.0e-2ubuntu4.6
• openssl - 1.0.0e-2ubuntu4.6

Ubuntu 11.04

• libssl0.9.8 - 0.9.8o-5ubuntu1.7
• openssl - 0.9.8o-5ubuntu1.7

Ubuntu 10.04

• libssl0.9.8 - 0.9.8k-7ubuntu8.13
• openssl - 0.9.8k-7ubuntu8.13

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

References

• CVE-2012-0884
• CVE-2012-2333