curl-library
[SECURITY ADVISORY] curl case insensitive password comparison
From: Daniel Stenberg <daniel_at_haxx.se>
Date: Wed, 2 Nov 2016 08:07:22 +0100 (CET)
Date: Wed, 2 Nov 2016 08:07:22 +0100 (CET)
case insensitive password comparison
====================================
Project cURL Security Advisory, November 2, 2016 -
[Permalink](https://curl.haxx.se/docs/adv_20161102B.html)
VULNERABILITY
-------------
When re-using a connection, curl was doing case insensitive comparisons of
user name and password with the existing connections.
This means that if an unused connection with proper credentials exists for a
protocol that has connection-scoped credentials, an attacker can cause that
connection to be reused if s/he knows the case-insensitive version of the
correct password.
We are not aware of any exploit of this flaw.
INFO
---- The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2016-8616 to this issue. AFFECTED VERSIONS ----------------- This flaw exists in the following curl versions. - Affected versions: curl 7.7 to and including 7.50.3 - Not affected versions: curl < 7.7 and curl >= 7.51.0 libcurl is used by many applications, but not always advertised as such! THE SOLUTION ------------ In version 7.51.0, these functions will deny negative string lengths from being used. A [patch for CVE-2016-8616](https://curl.haxx.se/CVE-2016-8616.patch) is available. RECOMMENDATIONS --------------- We suggest you take one of the following actions immediately, in order of preference: A - Upgrade curl and libcurl to version 7.51.0 B - Apply the patch to your version and rebuild TIME LINE --------- It was first reported to the curl project on September 23 by Cure53. We contacted distros_at_openwall on October 19. curl 7.51.0 was released on November 2 2016, coordinated with the publication of this advisory. CREDITS ------- This vulnerability was found during a Secure Open Source audit performed by Cure53. -- / daniel.haxx.se ------------------------------------------------------------------- List admin: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.htmlReceived on 2016-11-02