curl -- security update

2015-04-22T00:00:00
ID DSA-3232
Type debian
Reporter Debian
Modified 2015-04-22T00:00:00

Description

Several vulnerabilities were discovered in cURL, an URL transfer library:

NTLM-authenticated connections could be wrongly reused for requests without any credentials set, leading to HTTP requests being sent over the connection authenticated as a different user. This is similar to the issue fixed in DSA-2849-1.

When parsing URLs with a zero-length hostname (such as "http://:80"), libcurl would try to read from an invalid memory address. This could allow remote attackers to cause a denial of service (crash). This issue only affects the upcoming stable (jessie) and unstable (sid) distributions.

When parsing HTTP cookies, if the parsed cookie's path element consists of a single double-quote, libcurl would try to write to an invalid heap memory address. This could allow remote attackers to cause a denial of service (crash). This issue only affects the upcoming stable (jessie) and unstable (sid) distributions.

When doing HTTP requests using the Negotiate authentication method along with NTLM, the connection used would not be marked as authenticated, making it possible to reuse it and send requests for one user over the connection authenticated as a different user.

For the stable distribution (wheezy), these problems have been fixed in version 7.26.0-1+wheezy13.

For the upcoming stable distribution (jessie), these problems have been fixed in version 7.38.0-4+deb8u1.

For the unstable distribution (sid), these problems have been fixed in version 7.42.0-1.

We recommend that you upgrade your curl packages.