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
Details
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: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.