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.
Metrics
CVSS 2.0 5.8/10
AV:N/AC:M/Au:N/C:N/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
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=660053Patch
- 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=660053Patch
Timeline
- Published
- Aug 9, 2011
- Last modified
- Jun 16, 2026
- NVD status
- Modified