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Category:   Application (Generic)  >   curl Vendors:   curl.haxx.se
cURL Buffer Overread in Processing IMAP FETCH Response Data Lets Remote Users Deny Service or Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1039644
SecurityTracker URL:  http://securitytracker.com/id/1039644
CVE Reference:   CVE-2017-1000257   (Links to External Site)
Date:  Oct 24 2017
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.20.0 - 7.56.0
Description:   A vulnerability was reported in cURL. A remote user can cause the target application to crash. A remote user can obtain potentially sensitive information on the target system.

A remote user can return a specially crafted IMAP FETCH response to trigger a buffer overread in the IMAP handler and obtain potentially sensitive information from memory on the target system or cause the target application using libcurl to crash.

Brian Carpenter, Geeknik Labs, and 0xd34db347 reported this vulnerability.

Impact:   A remote user can cause the target application using libcurl to crash.

A remote user can obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix (7.56.1).

The vendor advisory is available at:

https://curl.haxx.se/docs/adv_20171023.html

Vendor URL:  curl.haxx.se/docs/adv_20171023.html (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 24 2017 (Ubuntu Issues Fix) cURL Buffer Overread in Processing IMAP FETCH Response Data Lets Remote Users Deny Service or Obtain Potentially Sensitive Information
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.
Nov 27 2017 (CentOS Issues Fix) cURL Buffer Overread in Processing IMAP FETCH Response Data Lets Remote Users Deny Service or Obtain Potentially Sensitive Information
CentOS has issued a fix for CentOS 7.
Nov 29 2017 (Oracle Issues Fix for Oracle Linux) cURL Buffer Overread in Processing IMAP FETCH Response Data Lets Remote Users Deny Service or Obtain Potentially Sensitive Information
Oracle has issued a fix for Oracle Linux 7.
Nov 30 2017 (Red Hat Issues Fix) cURL Buffer Overread in Processing IMAP FETCH Response Data Lets Remote Users Deny Service or Obtain Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



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