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Exploits
ID:667 - Exploit for Buffer overflow in FreeBSD - CVE-2011-4862
ID:667 - Exploit for Buffer overflow in FreeBSD - CVE-2011-4862
Published: March 18, 2020
Vulnerability identifier: #VU3031
Vulnerability risk: Critical
CVE-ID: CVE-2011-4862
CWE-ID: CWE-119
Exploitation vector: Remote access
Vulnerable software:
FreeBSD
FreeBSD
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to buffer overflow in the encrypt_keyid() function of telnetd. A remote attacker can send a very large encryption key to telnetd daemon, trigger buffer overflow and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.
The weakness exists due to buffer overflow in the encrypt_keyid() function of telnetd. A remote attacker can send a very large encryption key to telnetd daemon, trigger buffer overflow and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.
Remediation
Update the latest version from vendor's website:
http://security.FreeBSD.org/patches/SA-11:08/telnetd.patch
http://security.FreeBSD.org/patches/SA-11:08/telnetd.patch.asc
http://security.FreeBSD.org/patches/SA-11:08/telnetd.patch
http://security.FreeBSD.org/patches/SA-11:08/telnetd.patch.asc