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CVE-2011-4862

10.0 · HIGH

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 po…

Published Dec 25, 2011gnuCWE-120EPSS 95.06%

Overview

CVE-2011-4862 is a high-severity vulnerability affecting gnu inetutils. It was published on December 25, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from gnu. Update inetutils to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
gnuinetutils>= 0, < 1.9Affected
heimdal_projectheimdal0Affected
mitkrb5-appl0Affected
freebsdfreebsd7.3Affected

References

Refarchives.neohapsis.com/archives/bugtraq/2011-12/0172.htmlRefgit.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592Reflists.fedoraproject.org/pipermail/package-announce/2012-January/071627.htmlReflists.fedoraproject.org/pipermail/package-announce/2012-January/071640.htmlReflists.freebsd.org/pipermail/freebsd-security/2011-December/006117.htmlReflists.freebsd.org/pipermail/freebsd-security/2011-December/006118.htmlReflists.freebsd.org/pipermail/freebsd-security/2011-December/006119.htmlReflists.freebsd.org/pipermail/freebsd-security/2011-December/006120.htmlReflists.opensuse.org/opensuse-security-announce/2012-01/msg00002.htmlReflists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4862?

CVE-2011-4862 is a high-severity vulnerability affecting gnu inetutils. It was published on December 25, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2011-4862?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-4862?

Check the references section for vendor advisories and patches from gnu. Update inetutils to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4862?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4862 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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