CVE-2009-2071

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-06-15 · updated 2026-06-16
Weakness: CWE-287

Description

Google Chrome before 1.0.154.53 displays a cached certificate for a (1) 4xx or (2) 5xx CONNECT response page returned by a proxy server, which allows man-in-the-middle attackers to spoof an arbitrary https site by letting a browser obtain a valid certificate from this site during one request, and then sending the browser a crafted 502 response page upon a subsequent request.

Affected products

Google Chrome: through 1.0.154.52; 0.2.149.29, 0.2.149.30, 0.2.152.1, 0.2.153.1, 0.3.154.0, 0.3.154.3 (+9)

References

http://code.google.com/p/chromium/issues/detail?id=7338
http://code.google.com/p/chromium/issues/detail?id=8473
http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf
http://sites.google.com/a/chromium.org/dev/getting-involved/dev-channel/release-notes/releasenotes1015453
http://src.chromium.org/viewvc/chrome/branches/release_154.next/src/net/http/http_transaction_winhttp.cc?r1=11621&r2=11669&pathrev=11669
http://src.chromium.org/viewvc/chrome?view=rev&revision=11669
http://www.securityfocus.com/bid/35411
https://bugzilla.mozilla.org/show_bug.cgi?id=479880
http://code.google.com/p/chromium/issues/detail?id=7338
http://code.google.com/p/chromium/issues/detail?id=8473
http://research.microsoft.com/apps/pubs/default.aspx?id=79323

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