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Vulnerability Details : CVE-2011-4862 (1 public exploit)

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.
Publish Date : 2011-12-24 Last Update Date : 2013-07-17
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- CVSS Scores & Vulnerability Types

CVSS Score
10.0
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access Admin
Vulnerability Type(s) Execute CodeOverflow
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
8.3
AV:A/AC:L/Au:N/C:C/I:C/A:C 2011-12-25 2011-12-25
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-4862 oval:org.opensuse.security:def:20114862 unix
DSA-2372-1 heimdal -- buffer overflow oval:org.mitre.oval:def:15084 unix
DSA-2373-1 inetutils -- buffer overflow oval:org.mitre.oval:def:15184 unix
DSA-2375-1 krb5 -- buffer overflow oval:org.mitre.oval:def:15151 unix
ELSA-2011-1852 -- krb5-appl security update (critical) oval:org.mitre.oval:def:27975 unix
ELSA-2011:1851: krb5 security update (Critical) oval:org.mitre.oval:def:23239 unix
ELSA-2011:1852: krb5-appl security update (Critical) oval:org.mitre.oval:def:23380 unix
RHSA-2011:1851: krb5 security update (Critical) oval:org.mitre.oval:def:22146 unix
RHSA-2011:1851: krb5 security update (Critical) oval:com.redhat.rhsa:def:20111851 unix
RHSA-2011:1852: krb5-appl security update (Critical) oval:org.mitre.oval:def:22108 unix
RHSA-2011:1852: krb5-appl security update (Critical) oval:com.redhat.rhsa:def:20111852 unix
VMware ESXi and ESX address several security issues oval:org.mitre.oval:def:20405 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-4862

# Product Type Vendor Product Version Update Edition Language
1 OS Freebsd Freebsd 7.3 Version Details Vulnerabilities
2 OS Freebsd Freebsd 8.0 Version Details Vulnerabilities
3 OS Freebsd Freebsd 8.1 Version Details Vulnerabilities
4 OS Freebsd Freebsd 8.2 Version Details Vulnerabilities
5 OS Freebsd Freebsd 9.0 Version Details Vulnerabilities
6 Application H5L Heimdal 1.5.1 Version Details Vulnerabilities
7 Application MIT Krb5-appl 1.02 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Freebsd Freebsd 5
H5L Heimdal 1
MIT Krb5-appl 1

- References For CVE-2011-4862

http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html
BUGTRAQ 20111226 MITKRB5-SA-2011-008 buffer overflow in telnetd [CVE-2011-4862]
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html
FEDORA FEDORA-2011-17492
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592 CONFIRM
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html
FEDORA FEDORA-2011-17493
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html
SUSE SUSE-SU-2012:0018
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html
MLIST [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc
FREEBSD FreeBSD-SA-11:08
http://secunia.com/advisories/47441
SECUNIA 47441
http://secunia.com/advisories/47399
SECUNIA 47399
http://secunia.com/advisories/47397
SECUNIA 47397
http://secunia.com/advisories/47374
SECUNIA 47374
http://secunia.com/advisories/47373
SECUNIA 47373
http://secunia.com/advisories/47359
SECUNIA 47359
http://secunia.com/advisories/47357
SECUNIA 47357
http://secunia.com/advisories/47348
SECUNIA 47348
http://secunia.com/advisories/47341
SECUNIA 47341
http://secunia.com/advisories/46239
SECUNIA 46239
http://osvdb.org/78020
OSVDB 78020 FreeBSD telnetd Multiple telnet/libtelnet/encrypt.c encrypt_keyid() Function Command Parsing Remote Overflow FreeBSD telnetd Multiple telnet/libtelnet/encrypt.c encrypt_keyid() Function Command Parsing Remote Overflow
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html
SUSE SUSE-SU-2012:0056
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html
SUSE openSUSE-SU-2012:0051
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html
MLIST [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
http://www.redhat.com/support/errata/RHSA-2011-1854.html
REDHAT RHSA-2011:1854
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html
MLIST [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html
MLIST [freebsd-security] 20111223 Merry Christmas from the FreeBSD Security Team
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html
SUSE SUSE-SU-2012:0010
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html
SUSE openSUSE-SU-2012:0019
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html
SUSE SUSE-SU-2012:0024
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html
SUSE SUSE-SU-2012:0042
http://security.freebsd.org/patches/SA-11:08/telnetd.patch CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html
SUSE SUSE-SU-2012:0050
http://www.debian.org/security/2011/dsa-2372
DEBIAN DSA-2372
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt CONFIRM
Exploit! http://www.exploit-db.com/exploits/18280
EXPLOIT-DB 18280 Telnetd encrypt_keyid: Remote Root function pointer overwrite Author:NighterMan and BatchDrake Release Date:2011-12-26 (linux) remote
http://www.debian.org/security/2011/dsa-2375
DEBIAN DSA-2375
http://www.mandriva.com/security/advisories?name=MDVSA-2011:195
MANDRIVA MDVSA-2011:195
http://www.debian.org/security/2011/dsa-2373
DEBIAN DSA-2373
http://xforce.iss.net/xforce/xfdb/71970
XF multiple-telnetd-bo(71970)
http://www.redhat.com/support/errata/RHSA-2011-1851.html
REDHAT RHSA-2011:1851
http://www.redhat.com/support/errata/RHSA-2011-1853.html
REDHAT RHSA-2011:1853
http://www.redhat.com/support/errata/RHSA-2011-1852.html
REDHAT RHSA-2011:1852
http://www.securitytracker.com/id?1026460
SECTRACK 1026460
http://www.securitytracker.com/id?1026463
SECTRACK 1026463

- Metasploit Modules Related To CVE-2011-4862

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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