USN-1451-1: OpenSSL vulnerabilities
Ubuntu Security Notice USN-1451-1
24th May, 2012
openssl vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary
Applications using OpenSSL in certain situations could be made to crash or expose sensitive information.
Software description
- 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 version:
- Ubuntu 12.04 LTS:
- 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 LTS:
- libssl0.9.8 0.9.8k-7ubuntu8.13
- openssl 0.9.8k-7ubuntu8.13
- Ubuntu 8.04 LTS:
- libssl0.9.8 0.9.8g-4ubuntu3.19
- openssl 0.9.8g-4ubuntu3.19
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.