CVE-2009-3044

Description

Opera before 10.00 does not properly handle a (1) '\0' character or (2) invalid wildcard 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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.33%
Vendor Advisory opera.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.opera.com/docs/changelogs/freebsd/1000/
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6444 signature vdb entry
http://www.opera.com/docs/changelogs/solaris/1000/
http://www.opera.com/docs/changelogs/linux/1000/
http://www.opera.com/docs/changelogs/windows/1000/
http://www.opera.com/support/kb/view/934/ vendor advisory
http://www.opera.com/docs/changelogs/mac/1000/

Frequently Asked Questions

What is the severity of CVE-2009-3044?
CVE-2009-3044 has been scored as a medium severity vulnerability.
How to fix CVE-2009-3044?
To fix CVE-2009-3044, 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-2009-3044 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-3044 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.