Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2009-0641

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.

Published

2009-02-20T06:47:48.250

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 9.3 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-16
    CWE-264
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System freebsd freebsd 7.0 Yes
Operating System freebsd freebsd 7.0 Yes
Operating System freebsd freebsd 7.0 Yes
Operating System freebsd freebsd 7.0-release Yes
Operating System freebsd freebsd 7.0_beta4 Yes
Operating System freebsd freebsd 7.0_releng Yes
Operating System freebsd freebsd 7.1 Yes
Operating System freebsd freebsd 7.1 Yes
References