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Ubuntu 14.04 LTS USN-2385-1: OpenSSL DoS Issues And Fixes

ubuntu
Calendar Grey October 16, 2014
Scroller Ubuntu
Ubuntu Security Notice USN-2451-1 highlights vulnerabilities in OpenSSL that affect multiple LTS releases, providing essential patches.
Several security issues were fixed in OpenSSL.

Summary

Several security issues were fixed in OpenSSL.

Software Description:

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

Details:

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.

(CVE-2014-3513)

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

service. (CVE-2014-3567)

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 interope...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu OpenSSL patch memory issue

Update Instructions

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

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

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

References

https://ubuntu.com/security/notices/USN-2385-1

CVE-2014-3513, CVE-2014-3567

Severity
critical
Lowest
Low
Medium
High
Critical

October 16, 2014

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu OpenSSL patch memory issue

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.7
https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.20
https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.22

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