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National Cyber Awareness System

Vulnerability Summary for CVE-2012-4545

Original release date:01/03/2013
Last revised:03/08/2013
Source: US-CERT/NIST

Overview

The http_negotiate_create_context function in protocol/http/http_negotiate.c in ELinks 0.12 before 0.12pre6, when using HTTP Negotiate or GSS-Negotiate authentication, delegates user credentials through GSSAPI, which allows remote servers to authenticate as the client via the delegated credentials.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:5.1 (MEDIUM) (AV:N/AC:H/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: High
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: XF
Name: elinks-httpnegotiate-security-bypass(80882)
Hyperlink:http://xforce.iss.net/xforce/xfdb/80882
External Source: BID
Name: 57065
Hyperlink:http://www.securityfocus.com/bid/57065
External Source: DEBIAN
Name: DSA-2592
Hyperlink:http://www.debian.org/security/2012/dsa-2592
External Source: SECUNIA
Name: 51569
Type: Advisory
Hyperlink:http://secunia.com/advisories/51569
External Source: REDHAT
Name: RHSA-2013:0250
Hyperlink:http://rhn.redhat.com/errata/RHSA-2013-0250.html
External Source: CONFIRM
Name: http://repo.or.cz/w/elinks.git/blobdiff/89056e21fc7ab8e1c2d4e06ec9d0c6d01e70669a..da18694ff7dd0b67dfcb3c417fb0579b1e7d02d7:/src/protocol/http/http_negotiate.c
Hyperlink:http://repo.or.cz/w/elinks.git/blobdiff/89056e21fc7ab8e1c2d4e06ec9d0c6d01e70669a..da18694ff7dd0b67dfcb3c417fb0579b1e7d02d7:/src/protocol/http/http_negotiate.c
External Source: CONFIRM
Name: http://bugzilla.elinks.cz/show_bug.cgi?id=1124
Hyperlink:http://bugzilla.elinks.cz/show_bug.cgi?id=1124

Vulnerable software and versions

Nav control imageConfiguration 1
spacerNav control imageOR
spacerspacerNav control image* cpe:/a:elinks:elinks:0.12:pre1
spacerspacerNav control image* cpe:/a:elinks:elinks:0.12:pre2
spacerspacerNav control image* cpe:/a:elinks:elinks:0.12:pre3
spacerspacerNav control image* cpe:/a:elinks:elinks:0.12:pre4
spacerspacerNav control image* cpe:/a:elinks:elinks:0.12:pre5
* Denotes Vulnerable Software
* Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4545