CVE-2009-0641

critical

Description

sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.

References

https://www.exploit-db.com/exploits/8055

https://exchange.xforce.ibmcloud.com/vulnerabilities/48780

http://security.freebsd.org/advisories/FreeBSD-SA-09:05.telnetd.asc

Details

Source: Mitre, NVD

Published: 2009-02-20

Risk Information

CVSS v2

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical