CVE-2011-4862

N/A Unknown
Published: December 25, 2011 Modified: April 29, 2026
View on NVD

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html
Source: secteam@freebsd.org
Broken Link
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592
Source: secteam@freebsd.org
Patch Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html
Source: secteam@freebsd.org
Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html
Source: secteam@freebsd.org
Third Party Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html
Source: secteam@freebsd.org
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html
Source: secteam@freebsd.org
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html
Source: secteam@freebsd.org
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html
Source: secteam@freebsd.org
Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html
Source: secteam@freebsd.org
Mailing List Third Party Advisory
http://osvdb.org/78020
Source: secteam@freebsd.org
Broken Link
http://secunia.com/advisories/46239
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47341
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47348
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47357
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47359
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47373
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47374
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47397
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47399
Source: secteam@freebsd.org
Third Party Advisory
http://secunia.com/advisories/47441
Source: secteam@freebsd.org
Third Party Advisory
http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc
Source: secteam@freebsd.org
Mitigation Vendor Advisory
http://security.freebsd.org/patches/SA-11:08/telnetd.patch
Source: secteam@freebsd.org
Patch Vendor Advisory
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt
Source: secteam@freebsd.org
Patch Vendor Advisory
http://www.debian.org/security/2011/dsa-2372
Source: secteam@freebsd.org
Third Party Advisory
http://www.debian.org/security/2011/dsa-2373
Source: secteam@freebsd.org
Third Party Advisory
http://www.debian.org/security/2011/dsa-2375
Source: secteam@freebsd.org
Third Party Advisory
http://www.exploit-db.com/exploits/18280/
Source: secteam@freebsd.org
Exploit Third Party Advisory VDB Entry
http://www.mandriva.com/security/advisories?name=MDVSA-2011:195
Source: secteam@freebsd.org
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1851.html
Source: secteam@freebsd.org
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1852.html
Source: secteam@freebsd.org
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1853.html
Source: secteam@freebsd.org
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1854.html
Source: secteam@freebsd.org
Third Party Advisory
http://www.securitytracker.com/id?1026460
Source: secteam@freebsd.org
Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1026463
Source: secteam@freebsd.org
Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/71970
Source: secteam@freebsd.org
Third Party Advisory VDB Entry
http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://osvdb.org/78020
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://secunia.com/advisories/46239
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47341
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47348
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47357
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47359
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47373
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47374
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47397
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47399
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/47441
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc
Source: af854a3a-2127-422b-91ae-364da2661108
Mitigation Vendor Advisory
http://security.freebsd.org/patches/SA-11:08/telnetd.patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
http://www.debian.org/security/2011/dsa-2372
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.debian.org/security/2011/dsa-2373
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.debian.org/security/2011/dsa-2375
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.exploit-db.com/exploits/18280/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://www.mandriva.com/security/advisories?name=MDVSA-2011:195
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1851.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1852.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1853.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1854.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.securitytracker.com/id?1026460
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1026463
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/71970
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry

84 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
95.1%
100th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-120

Affected Vendors

mit heimdal_project opensuse fedoraproject gnu freebsd debian suse

Related CVEs

CVE-2026-9677 N/A
CVE-2026-13245 6.1
CVE-2026-12404 5.3
CVE-2026-10820 N/A
CVE-2026-12415 9.8