Buffer overflow in FreeBSD
CVE-2011-4862
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 10.0 (High). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.951 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.950 · newest: 0.951 · change: +0.001
Affected products
- FreeBSD
- GNU Inetutils
- Heimdal Project
- Mit Krb5-Appl
- Debian Linux — versions 5.0, 6.0, 7.0
- Fedoraproject Fedora — versions 15, 16
- openSUSE — versions 11.3, 11.4
- SUSE Linux Enterprise Desktop — versions 10, 11
- SUSE Linux Enterprise Server — versions 9, 10, 11
- SUSE Linux Enterprise Software Development Kit — versions 10, 11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html (vendor-advisory, Mailing List, Third Party Advisory)
- secunia.com/advisories/47399 (Third Party Advisory, third-party-advisory)
- www.debian.org/security/2011/dsa-2375 (vendor-advisory, Third Party Advisory)
- www.redhat.com/support/errata/RHSA-2011-1854.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- archives.neohapsis.com/archives/bugtraq/2011-12/0172.html (mailing-list, Broken Link)
- www.debian.org/security/2011/dsa-2372 (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/47359 (Third Party Advisory, third-party-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html (vendor-advisory, Third Party Advisory)
- lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html (Vendor Advisory, mailing-list)
Frequently asked questions
- What is CVE-2011-4862?
- CVE-2011-4862 is a vulnerability in FreeBSD, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). Published 2011-12-25.
- Is CVE-2011-4862 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.