CVE-2008-7293

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-09 · updated 2026-06-16
Weakness: CWE-264

Description

Mozilla Firefox before 4 cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.

Affected products

Mozilla Firefox: through 4.0; 1.0, 1.0-preview_release, 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+113)

References

http://code.google.com/p/browsersec/wiki/Part2#Same-origin_policy_for_cookies
http://hacks.mozilla.org/2010/08/firefox-4-http-strict-transport-security-force-https/
http://michael-coates.blogspot.com/2010/01/cookie-forcing-trust-your-cookies-no.html
http://scarybeastsecurity.blogspot.com/2008/11/cookie-forcing.html
http://scarybeastsecurity.blogspot.com/2011/02/some-less-obvious-benefits-of-hsts.html
https://bugzilla.mozilla.org/show_bug.cgi?id=660053
http://code.google.com/p/browsersec/wiki/Part2#Same-origin_policy_for_cookies
http://hacks.mozilla.org/2010/08/firefox-4-http-strict-transport-security-force-https/
http://michael-coates.blogspot.com/2010/01/cookie-forcing-trust-your-cookies-no.html
http://scarybeastsecurity.blogspot.com/2008/11/cookie-forcing.html
http://scarybeastsecurity.blogspot.com/2011/02/some-less-obvious-benefits-of-hsts.html
https://bugzilla.mozilla.org/show_bug.cgi?id=660053

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