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...
- Published
- Dec 25, 2011
- Updated
- Aug 7, 2024
- Assigning CNA
- freebsd
- Evidence observed
- Dec 26, 2011
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:CHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Oct 13, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
modules/auxiliary/scanner/telnet/telnet_encrypt_overflow.rb
Metasploit Framework modulesDeclared conditions
- verification: check_not_declared($.auxiliary_scanner/telnet/telnet_encrypt_overflow.check)
modules/exploits/freebsd/telnet/telnet_encrypt_keyid.rb
Metasploit Framework modulesDeclared conditions
- platform: BSD($.exploit_freebsd/telnet/telnet_encrypt_keyid.platform)
- verification: check_not_declared($.exploit_freebsd/telnet/telnet_encrypt_keyid.check)
modules/exploits/linux/telnet/telnet_encrypt_keyid.rb
Metasploit Framework modulesDeclared conditions
- platform: Linux($.exploit_linux/telnet/telnet_encrypt_keyid.platform)
- verification: check_not_declared($.exploit_linux/telnet/telnet_encrypt_keyid.check)
Responsible use
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