CVE-2009-1836

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-06-12 · updated 2026-06-16
Weakness: CWE-287

Description

Mozilla Firefox before 3.0.11, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.17 use the HTTP Host header to determine the context of a document provided in a non-200 CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an "SSL tampering" attack.

Affected products

Mozilla Firefox: through 3.0.10; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+95)
Mozilla Seamonkey: through 1.1.16; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.3, 1.0.4 (+20)
Mozilla Thunderbird: through 2.0.0.19; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+62)

References

http://osvdb.org/55160
http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf
http://secunia.com/advisories/35331
http://secunia.com/advisories/35415
http://secunia.com/advisories/35431
http://secunia.com/advisories/35439
http://secunia.com/advisories/35440
http://secunia.com/advisories/35468
http://secunia.com/advisories/35536
http://secunia.com/advisories/35561
http://secunia.com/advisories/35602

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