CVE-2011-4862
FreeBSD telnetd Buffer Overflow Vulnerability
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.
INFO
Published Date :
Dec. 25, 2011, 1:55 a.m.
Last Modified :
April 11, 2025, 12:51 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2011-4862
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] |
Solution
- Update affected packages to patched versions.
- Disable Telnet services if unable to patch.
Public PoC/Exploit Available at Github
CVE-2011-4862 has a 9 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2011-4862.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2011-4862 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2011-4862
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
C Shell Python Ruby Makefile HTML Linker Script Batchfile Perl
Imoro Umar Farouq's report on Internal Network Penetration Testing
Shell
None
None
C
Final Project for Security and Privacy CS 600.443
C
Localroot-ALL-CVE~
localroot cheatsheet security kernel linux exploits cve linux-privilege-escalation cybersecurity infosec pentesting
C Shell Python Ruby Makefile HTML Perl Batchfile
Localroot Compile
C Shell Python
None
Go Exploit for CVE-2011-4862
Makefile Go
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2011-4862 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2011-4862 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html Added Reference http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592 Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html Added Reference http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html Added Reference http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html Added Reference http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html Added Reference http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html Added Reference http://osvdb.org/78020 Added Reference http://secunia.com/advisories/46239 Added Reference http://secunia.com/advisories/47341 Added Reference http://secunia.com/advisories/47348 Added Reference http://secunia.com/advisories/47357 Added Reference http://secunia.com/advisories/47359 Added Reference http://secunia.com/advisories/47373 Added Reference http://secunia.com/advisories/47374 Added Reference http://secunia.com/advisories/47397 Added Reference http://secunia.com/advisories/47399 Added Reference http://secunia.com/advisories/47441 Added Reference http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc Added Reference http://security.freebsd.org/patches/SA-11:08/telnetd.patch Added Reference http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt Added Reference http://www.debian.org/security/2011/dsa-2372 Added Reference http://www.debian.org/security/2011/dsa-2373 Added Reference http://www.debian.org/security/2011/dsa-2375 Added Reference http://www.exploit-db.com/exploits/18280/ Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2011:195 Added Reference http://www.redhat.com/support/errata/RHSA-2011-1851.html Added Reference http://www.redhat.com/support/errata/RHSA-2011-1852.html Added Reference http://www.redhat.com/support/errata/RHSA-2011-1853.html Added Reference http://www.redhat.com/support/errata/RHSA-2011-1854.html Added Reference http://www.securitytracker.com/id?1026460 Added Reference http://www.securitytracker.com/id?1026463 Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/71970 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Feb. 09, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:gnu:inetutils:-:*:*:*:*:*:*:* *cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:* versions up to (including) 1.5.1 *cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:* versions up to (including) 1.0.2 *cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (including) 9.0 OR *cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:* versions up to (excluding) 1.9 *cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:* versions up to (including) 1.5.1 *cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:* versions up to (including) 1.0.2 *cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (including) 9.0 -
Modified Analysis by [email protected]
Feb. 03, 2021
Action Type Old Value New Value Changed Reference Type http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html No Types Assigned http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html Broken Link Changed Reference Type http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592 No Types Assigned http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592 Patch, Third Party Advisory Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html Third Party Advisory Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html Mailing List, Third Party Advisory Changed Reference Type http://osvdb.org/78020 No Types Assigned http://osvdb.org/78020 Broken Link Changed Reference Type http://secunia.com/advisories/46239 No Types Assigned http://secunia.com/advisories/46239 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47341 No Types Assigned http://secunia.com/advisories/47341 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47348 No Types Assigned http://secunia.com/advisories/47348 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47357 No Types Assigned http://secunia.com/advisories/47357 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47359 No Types Assigned http://secunia.com/advisories/47359 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47373 No Types Assigned http://secunia.com/advisories/47373 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47374 No Types Assigned http://secunia.com/advisories/47374 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47397 No Types Assigned http://secunia.com/advisories/47397 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47399 No Types Assigned http://secunia.com/advisories/47399 Third Party Advisory Changed Reference Type http://secunia.com/advisories/47441 No Types Assigned http://secunia.com/advisories/47441 Third Party Advisory Changed Reference Type http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc Vendor Advisory http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc Mitigation, Vendor Advisory Changed Reference Type http://security.freebsd.org/patches/SA-11:08/telnetd.patch Vendor Advisory http://security.freebsd.org/patches/SA-11:08/telnetd.patch Patch, Vendor Advisory Changed Reference Type http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt No Types Assigned http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt Patch, Vendor Advisory Changed Reference Type http://www.debian.org/security/2011/dsa-2372 No Types Assigned http://www.debian.org/security/2011/dsa-2372 Third Party Advisory Changed Reference Type http://www.debian.org/security/2011/dsa-2373 No Types Assigned http://www.debian.org/security/2011/dsa-2373 Third Party Advisory Changed Reference Type http://www.debian.org/security/2011/dsa-2375 No Types Assigned http://www.debian.org/security/2011/dsa-2375 Third Party Advisory Changed Reference Type http://www.exploit-db.com/exploits/18280/ No Types Assigned http://www.exploit-db.com/exploits/18280/ Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://www.mandriva.com/security/advisories?name=MDVSA-2011:195 No Types Assigned http://www.mandriva.com/security/advisories?name=MDVSA-2011:195 Third Party Advisory Changed Reference Type http://www.redhat.com/support/errata/RHSA-2011-1851.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2011-1851.html Third Party Advisory Changed Reference Type http://www.redhat.com/support/errata/RHSA-2011-1852.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2011-1852.html Third Party Advisory Changed Reference Type http://www.redhat.com/support/errata/RHSA-2011-1853.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2011-1853.html Third Party Advisory Changed Reference Type http://www.redhat.com/support/errata/RHSA-2011-1854.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2011-1854.html Third Party Advisory Changed Reference Type http://www.securitytracker.com/id?1026460 No Types Assigned http://www.securitytracker.com/id?1026460 Third Party Advisory, VDB Entry Changed Reference Type http://www.securitytracker.com/id?1026463 No Types Assigned http://www.securitytracker.com/id?1026463 Third Party Advisory, VDB Entry Changed Reference Type https://exchange.xforce.ibmcloud.com/vulnerabilities/71970 No Types Assigned https://exchange.xforce.ibmcloud.com/vulnerabilities/71970 Third Party Advisory, VDB Entry Removed CWE NIST CWE-119 Added CWE NIST CWE-120 Changed CPE Configuration OR *cpe:2.3:a:h5l:heimdal:*:*:*:*:*:*:*:* versions up to (including) 1.5.1 *cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:* versions up to (including) 1.02 *cpe:2.3:o:freebsd:freebsd:7.3:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:8.1:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:8.2:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:* OR *cpe:2.3:a:gnu:inetutils:-:*:*:*:*:*:*:* *cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:* versions up to (including) 1.5.1 *cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:* versions up to (including) 1.0.2 *cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (including) 9.0 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise_desktop:10:sp4:*:*:-:*:*:* *cpe:2.3:o:suse:linux_enterprise_desktop:11:sp1:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise_server:10:sp2:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise_server:10:sp3:*:*:ltss:*:*:* *cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:-:*:*:* *cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:*:-:*:* *cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:-:vmware:*:* *cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp4:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp1:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 29, 2017
Action Type Old Value New Value Removed Reference http://xforce.iss.net/xforce/xfdb/71970 [No Types Assigned] Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/71970 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 26, 2011
Action Type Old Value New Value
Vulnerability Scoring Details
Base CVSS Score: 10
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
92.58 }} -3.67%
score
0.99743
percentile