CVE-2009-0641

Public Exploit

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.

Category

9.3
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 5.39% Top 15%
Vendor Advisory freebsd.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://security.freebsd.org/advisories/FreeBSD-SA-09:05.telnetd.asc patch vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/48780 vdb entry
http://www.securityfocus.com/bid/33777 vdb entry exploit
http://lists.grok.org.uk/pipermail/full-disclosure/2009-February/067954.html mailing list exploit
https://www.exploit-db.com/exploits/8055 exploit

Frequently Asked Questions

What is the severity of CVE-2009-0641?
CVE-2009-0641 has been scored as a critical severity vulnerability.
How to fix CVE-2009-0641?
To fix CVE-2009-0641, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0641 being actively exploited in the wild?
It is possible that CVE-2009-0641 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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