CVE-2011-4862

Public Exploit

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.

Category

10.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 92.58% Top 5%
Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory freebsd.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory mandriva.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory freebsd.org Vendor Advisory freebsd.org Vendor Advisory freebsd.org Vendor Advisory freebsd.org Vendor Advisory freebsd.org Vendor Advisory mit.edu
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2011-4862?
CVE-2011-4862 has been scored as a critical severity vulnerability.
How to fix CVE-2011-4862?
To fix CVE-2011-4862, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4862 being actively exploited in the wild?
It is possible that CVE-2011-4862 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~93% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.