USN-2385-1: OpenSSL vulnerabilities
Ubuntu Security Notice USN-2385-1
16th October, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Several security issues were fixed in OpenSSL.
- openssl - Secure Socket Layer (SSL) cryptographic library and tools
It was discovered that OpenSSL incorrectly handled memory when parsing
DTLS SRTP extension data. A remote attacker could possibly use this issue
to cause OpenSSL to consume resources, resulting in a denial of service.
This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
It was discovered that OpenSSL incorrectly handled memory when verifying
the integrity of a session ticket. A remote attacker could possibly use
this issue to cause OpenSSL to consume resources, resulting in a denial of
In addition, this update introduces support for the TLS Fallback Signaling
Cipher Suite Value (TLS_FALLBACK_SCSV). This new feature prevents protocol
downgrade attacks when certain applications such as web browsers attempt
to reconnect using a lower protocol version for interoperability reasons.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- libssl1.0.0 1.0.1f-1ubuntu2.7
- Ubuntu 12.04 LTS:
- libssl1.0.0 1.0.1-4ubuntu5.20
- Ubuntu 10.04 LTS:
- libssl0.9.8 0.9.8k-7ubuntu8.22
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.