USN-726-1: curl vulnerability

Ubuntu Security Notice USN-726-1

3rd March, 2009

curl vulnerability

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

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 6.06 LTS

Software description

  • curl


It was discovered that curl did not enforce any restrictions when following
URL redirects. If a user or automated system were tricked into opening a URL to
an untrusted server, an attacker could use redirects to gain access to abitrary
files. This update changes curl behavior to prevent following "file" URLs after
a redirect.

Update instructions

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

Ubuntu 8.10:
libcurl3-gnutls 7.18.2-1ubuntu4.1
libcurl3 7.18.2-1ubuntu4.1
Ubuntu 8.04 LTS:
libcurl3-gnutls 7.18.0-1ubuntu2.1
libcurl3 7.18.0-1ubuntu2.1
Ubuntu 7.10:
libcurl3-gnutls 7.16.4-2ubuntu1.1
libcurl3 7.16.4-2ubuntu1.1
Ubuntu 6.06 LTS:
libcurl3-gnutls 7.15.1-1ubuntu3.1
libcurl3 7.15.1-1ubuntu3.1

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the
necessary changes.