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Category:   Application (Generic)  >   curl Vendors:   curl.haxx.se
libcurl Curl_ntlm_core_mk_nt_hash() Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1041605
SecurityTracker URL:  http://securitytracker.com/id/1041605
CVE Reference:   CVE-2018-14618   (Links to External Site)
Date:  Sep 6 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in libcurl on 32-bit systems. A remote user can execute arbitrary code on the target system.

A remote user can send a specially crafted NTLM authentication password to trigger a buffer overflow in Curl_ntlm_core_mk_nt_hash() in 'lib/curl_ntlm_core.c' and execute arbitrary code on the target system.

Systems with a 32-bit size_t and that use more than 2 GB of memory for the password field are affected.

Zhaoyang Wu reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (7.61.1).

The vendor advisory is available at:

https://curl.haxx.se/docs/CVE-2018-14618.html

Vendor URL:  curl.haxx.se/docs/CVE-2018-14618.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.
Sep 17 2018 (Ubuntu Issues Fix) libcurl Curl_ntlm_core_mk_nt_hash() Buffer Overflow Lets Remote Users Execute Arbitrary Code
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.
Sep 17 2018 (Ubuntu Issues Fix) libcurl Curl_ntlm_core_mk_nt_hash() Buffer Overflow Lets Remote Users Execute Arbitrary Code
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 18.04 LTS.



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