CVE-2009-2061

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-06-15 · updated 2026-06-16
Weakness: CWE-310

Description

Mozilla Firefox before 3.0.10 processes a 3xx HTTP CONNECT response before a successful SSL handshake, which allows man-in-the-middle attackers to execute arbitrary web script, in an https site's context, by modifying this CONNECT response to specify a 302 redirect to an arbitrary https web site.

Affected products

Mozilla Firefox: through 3.0.9; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+80)

References

http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf
http://www.securityfocus.com/bid/35412
https://exchange.xforce.ibmcloud.com/vulnerabilities/51203
http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf
http://www.securityfocus.com/bid/35412
https://exchange.xforce.ibmcloud.com/vulnerabilities/51203

Get alerted when CVE-2009-2061 or the next vulnerability affects your stack