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Category:   Application (Generic)  >   curl Vendors:   curl.haxx.se
(Ubuntu Issues Fix) libcurl Out-of-Bounds Memory Read Error in FTP Wildcard Function Lets Remote Users Redirect the Target Client to an Arbitrary Site
SecurityTracker Alert ID:  1039904
SecurityTracker URL:  http://securitytracker.com/id/1039904
CVE Reference:   CVE-2017-8817   (Links to External Site)
Date:  Nov 30 2017
Impact:   Disclosure of system information, Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.21.0 - 7.56.1
Description:   A vulnerability was reported in libcurl. A remote user may be able to redirect the target client to an arbitrary site.

A remote server can return specially crafted data to trigger an out-of-bounds memory read error in the FTP wildcard matching function (CURLOPT_WILDCARDMATCH) and cause the target connected libcurl client to be redirected.

libcurl applications that use HTTP or HTTPS URLs, allow libcurl redirects, and has FTP wildcards enabled are affected.

The vendor was notified on November 10, 2017.

The OSS-Fuzz project reported reported this vulnerability.

Impact:   A remote user may be able to redirect the target client to an arbitrary site.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3498-1

Vendor URL:  www.ubuntu.com/usn/usn-3498-1 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 17.04, 17.10

Message History:   This archive entry is a follow-up to the message listed below.
Nov 30 2017 libcurl Out-of-Bounds Memory Read Error in FTP Wildcard Function Lets Remote Users Redirect the Target Client to an Arbitrary Site



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