USN-1894-1: curl vulnerability

2 July 2013

curl vulnerability

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

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


libcurl could be made to crash or run programs as your login if it received specially crafted input.

Software Description

  • curl - HTTP, HTTPS, and FTP client and client libraries


Timo Sirainen discovered that libcurl incorrectly handled memory when parsing URL encoded strings. An attacker could possibly use this issue to cause libcurl to crash, leading to a denial of service, or execute arbitrary code.

Update instructions

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

Ubuntu 13.04
libcurl3 - 7.29.0-1ubuntu3.1
libcurl3-gnutls - 7.29.0-1ubuntu3.1
libcurl3-nss - 7.29.0-1ubuntu3.1
Ubuntu 12.10
libcurl3 - 7.27.0-1ubuntu1.3
libcurl3-gnutls - 7.27.0-1ubuntu1.3
libcurl3-nss - 7.27.0-1ubuntu1.3
Ubuntu 12.04 LTS
libcurl3 - 7.22.0-3ubuntu4.2
libcurl3-gnutls - 7.22.0-3ubuntu4.2
libcurl3-nss - 7.22.0-3ubuntu4.2
Ubuntu 10.04 LTS
libcurl3 - 7.19.7-1ubuntu1.3
libcurl3-gnutls - 7.19.7-1ubuntu1.3

To update your system, please follow these instructions:

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