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Category:   Application (Generic)  >   curl Vendors:   curl.haxx.se
libcurl Lets Remote Users Bypass NTLM Proxy Authentication on the Target System
SecurityTracker Alert ID:  1034882
SecurityTracker URL:  http://securitytracker.com/id/1034882
CVE Reference:   CVE-2016-0755   (Links to External Site)
Date:  Jan 29 2016
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.10.7 - 7.46.0
Description:   A vulnerability was reported in libcurl. A remote user can bypass proxy authentication in certain cases.

The libcurl client may reuse an NTLM-authenticated proxy connection for a different NTLM-authenticated proxy user. As a result, the remote authenticated client user's data may use a proxy connection for a different client username.

The vendor was notified on January, 13 2016.

Isaac Boukris reported this vulnerability.

Impact:   A remote NTLM-authenticated client user's data may use a proxy connection for a different authenticated client username.
Solution:   The vendor has issued a fix (7.47.0).

The vendor's advisory is available at:

http://curl.haxx.se/docs/adv_20160127A.html

Vendor URL:  curl.haxx.se/docs/adv_20160127A.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 29 2016 (Ubuntu Issues Fix) libcurl Lets Remote Users Bypass NTLM Proxy Authentication on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 15.04, and 15.10.



 Source Message Contents



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