CVE-2009-2510

Description

The CryptoAPI component in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, as used by Internet Explorer and other applications, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, aka "Null Truncation in X.509 Common Name Vulnerability," a related issue to CVE-2009-2408.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 17.22% Top 10%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/36475 vdb entry
http://www.us-cert.gov/cas/techalerts/TA09-286A.html third party advisory us government resource
http://www.wired.com/threatlevel/2009/07/kaminsky/
http://www.networkworld.com/news/2009/091709-microsoft-ie-security-hole.html
http://www.networkworld.com/news/2009/073009-more-holes-found-in-webs.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5842 vdb entry signature
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2009-2510?
CVE-2009-2510 has been scored as a medium severity vulnerability.
How to fix CVE-2009-2510?
To fix CVE-2009-2510, 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-2009-2510 being actively exploited in the wild?
It is possible that CVE-2009-2510 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~17% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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