10.0
CRITICAL
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 :

Feb. 9, 2021, 2:48 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

10.0

Exploitability Score :

10.0
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.

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.

ID Vendor Product Action
1 Suse linux_enterprise_server
2 Suse linux_enterprise_desktop
3 Suse linux_enterprise_software_development_kit
1 Fedoraproject fedora
1 Debian debian_linux
1 Freebsd freebsd
1 Opensuse opensuse
1 Heimdal_project heimdal
1 Mit krb5-appl
1 Gnu inetutils
: Total Affected Vendor : 8 | Products : 10
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.

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

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).

Profile Photo
Farrhouq/Inpt-report

Imoro Umar Farouq's report on Internal Network Penetration Testing

Shell

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : Sept. 12, 2024, 11:46 a.m. This repo has been linked 161 different CVEs too.
Profile Photo
sash3939/IS_Vulnerabilities_attacks

None

Updated: 6 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : May 6, 2024, 7:01 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
CVEDB/awesome-cve-repo

None

Shell

Updated: 2 months, 2 weeks ago
3 stars 2 fork 2 watcher
Born at : March 23, 2023, 4:32 a.m. This repo has been linked 435 different CVEs too.
Profile Photo
lmendiboure/OC_SECU

None

C

Updated: 2 years ago
0 stars 1 fork 1 watcher
Born at : Dec. 13, 2020, 10:25 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
kpawar2410/CVE-2011-4862

Final Project for Security and Privacy CS 600.443

C

Updated: 10 months ago
1 stars 0 fork 0 watcher
Born at : Feb. 6, 2020, 9:30 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Snoopy-Sec/Localroot-ALL-CVE

Localroot-ALL-CVE~

localroot cheatsheet security kernel linux exploits cve linux-privilege-escalation cybersecurity infosec pentesting

C Shell Python Ruby Makefile HTML Perl Batchfile

Updated: 2 months, 3 weeks ago
123 stars 46 fork 46 watcher
Born at : Feb. 2, 2020, 6:25 a.m. This repo has been linked 93 different CVEs too.
Profile Photo
anoaghost/Localroot_Compile

Localroot Compile

C Shell Python

Updated: 3 months, 1 week ago
24 stars 24 fork 24 watcher
Born at : Aug. 1, 2019, 11:25 a.m. This repo has been linked 31 different CVEs too.
Profile Photo
lol-fi/cve-2011-4862

None

Updated: 5 years, 11 months ago
0 stars 0 fork 0 watcher
Born at : Nov. 28, 2018, 9:13 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
hdbreaker/GO-CVE-2011-4862

Go Exploit for CVE-2011-4862

Makefile Go

Updated: 9 months, 3 weeks ago
4 stars 3 fork 3 watcher
Born at : Feb. 2, 2017, 6:12 p.m. This repo has been linked 1 different CVEs too.

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 [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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

96.74 }} 0.05%

score

0.99720

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability
: