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[USN-2048-1] curl vulnerability

Posted on 05 December 2013
Ubuntu Security

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Ubuntu Security Notice USN-2048-1
December 05, 2013

curl vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Fraudulent security certificates could allow sensitive information to
be exposed when accessing the Internet.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Scott Cantor discovered that libcurl incorrectly verified CN and SAN name=

fields when digital signature verification was disabled. When libcurl is
being used in this uncommon way by specific applications, an attacker cou=
ld
exploit this to perform a man in the middle attack to view sensitive
information or alter encrypted communications.

Update instructions:

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

Ubuntu 13.10:
libcurl3 7.32.0-1ubuntu1.1

Ubuntu 13.04:
libcurl3 7.29.0-1ubuntu3.3

Ubuntu 12.10:
libcurl3 7.27.0-1ubuntu1.5

Ubuntu 12.04 LTS:
libcurl3 7.22.0-3ubuntu4.4

Ubuntu 10.04 LTS:
libcurl3 7.19.7-1ubuntu1.4

In general, a standard system update will make all the necessary changes.=


References:
http://www.ubuntu.com/usn/usn-2048-1
CVE-2013-4545

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.32.0-1ubuntu1.1
https://launchpad.net/ubuntu/+source/curl/7.29.0-1ubuntu3.3
https://launchpad.net/ubuntu/+source/curl/7.27.0-1ubuntu1.5
https://launchpad.net/ubuntu/+source/curl/7.22.0-3ubuntu4.4
https://launchpad.net/ubuntu/+source/curl/7.19.7-1ubuntu1.4

 

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