CVE-2009-4565

Description

sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Category

7.5
CVSS
Severity: High
CVSS 2.0 •
EPSS 0.99% Top 25%
Vendor Advisory gentoo.org Vendor Advisory sun.com Vendor Advisory opensuse.org Vendor Advisory marc.info Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory secunia.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/38314 third party advisory
http://security.gentoo.org/glsa/glsa-201206-30.xml vendor advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1 vendor advisory
http://secunia.com/advisories/39088 third party advisory
http://www.vupen.com/english/advisories/2009/3661 vdb entry patch vendor advisory
http://secunia.com/advisories/37998 third party advisory vendor advisory
http://www.securityfocus.com/bid/37543 vdb entry
http://www.vupen.com/english/advisories/2011/0415 vdb entry
http://secunia.com/advisories/43366 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10255 vdb entry signature
http://www.sendmail.org/releases/8.14.4 patch
http://marc.info/?l=bugtraq&m=126953289726317&w=2 vendor advisory
http://www.vupen.com/english/advisories/2010/0719 vdb entry
http://www.redhat.com/support/errata/RHSA-2011-0262.html vendor advisory
http://www.debian.org/security/2010/dsa-1985 vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11822 vdb entry signature
http://secunia.com/advisories/40109 third party advisory
http://secunia.com/advisories/38915 third party advisory
http://www.vupen.com/english/advisories/2010/1386 vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-4565?
CVE-2009-4565 has been scored as a high severity vulnerability.
How to fix CVE-2009-4565?
To fix CVE-2009-4565, 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-2009-4565 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-4565 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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