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Last updated: 7/31/2014 7:44:56 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-4862

Original release date: 12/24/2011
Last revised: 07/17/2013
Source: US-CERT/NIST

Overview

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 10.0 (HIGH) (AV:N/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
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: REDHAT
Name: RHSA-2011:1854
External Source: DEBIAN
Name: DSA-2372
External Source: SECTRACK
Name: 1026460
External Source: SECUNIA
Name: 47348
External Source: SECUNIA
Name: 47374
External Source: BUGTRAQ
Name: 20111226 MITKRB5-SA-2011-008 buffer overflow in telnetd [CVE-2011-4862]
External Source: SECUNIA
Name: 47373
External Source: SUSE
Name: SUSE-SU-2012:0018
External Source: OSVDB
Name: 78020
External Source: SECUNIA
Name: 47359
External Source: SECUNIA
Name: 47441
External Source: CONFIRM
Name: http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592
External Source: SUSE
Name: SUSE-SU-2012:0050
External Source: FREEBSD
Name: FreeBSD-SA-11:08
Type: Advisory
External Source: MLIST
Name: [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
Type: Advisory
External Source: SUSE
Name: SUSE-SU-2012:0042
External Source: SECTRACK
Name: 1026463
External Source: DEBIAN
Name: DSA-2373
External Source: SUSE
Name: SUSE-SU-2012:0010
External Source: SECUNIA
Name: 47397
External Source: XF
Name: multiple-telnetd-bo(71970)
External Source: SECUNIA
Name: 47357
External Source: SUSE
Name: openSUSE-SU-2012:0019
External Source: SECUNIA
Name: 46239
External Source: DEBIAN
Name: DSA-2375
External Source: REDHAT
Name: RHSA-2011:1852
External Source: SUSE
Name: SUSE-SU-2012:0056
External Source: SUSE
Name: openSUSE-SU-2012:0051
External Source: EXPLOIT-DB
Name: 18280
External Source: REDHAT
Name: RHSA-2011:1853
External Source: SUSE
Name: SUSE-SU-2012:0024
External Source: MLIST
Name: [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
Type: Advisory
External Source: FEDORA
Name: FEDORA-2011-17493
External Source: MLIST
Name: [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
Type: Advisory
External Source: SECUNIA
Name: 47341
External Source: REDHAT
Name: RHSA-2011:1851
External Source: CONFIRM
Name: http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt
External Source: FEDORA
Name: FEDORA-2011-17492
External Source: CONFIRM
Name: http://security.freebsd.org/patches/SA-11:08/telnetd.patch
Type: Advisory
External Source: MLIST
Name: [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
Type: Advisory
External Source: MANDRIVA
Name: MDVSA-2011:195
External Source: SECUNIA
Name: 47399

Technical Details

Vulnerability Type (View All)