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Debian Security Advisory DSA-2271-1                   security@debian.org
http://www.debian.org/security/                         Giuseppe Iuculano
July 02, 2011                          http://www.debian.org/security/faq
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Package        : curl
Vulnerability  : improper delegation of client credentials
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-2192 
Debian Bug     : #631615

Richard Silverman discovered that when doing GSSAPI authentication, libcurl
unconditionally performs credential delegation. This hands the server a copy of
the client's security credentials, allowing the server to impersonate the
client to any other using the same GSSAPI mechanism.
This is obviously a very sensitive operation, which should only be done when
the user explicitly so directs.


For the oldstable distribution (lenny), this problem has been fixed in
version 7.18.2-8lenny5.

For the stable distribution (squeeze), this problem has been fixed in
version 7.21.0-2.

For the testing distribution (wheezy), this problem has been fixed in
version 7.21.6-2.

For the unstable distribution (sid), this problem has been fixed in
version 7.21.6-2.

We recommend that you upgrade your curl packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

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