CVE-2009-3555

Original description

The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a "plaintext injection" attack, aka the "Project Mogul" issue.

Affected software

• nginx ≥ 0.1.0 ≤ 0.8.22 exact match
• OpenSSL ≤ 0.9.8k= 1.0 exact match

Details

Published

2009-11-09

Last modified

2026-06-16

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-295, CWE-300

EPSS (30-day exploit probability)

87.26% (percentile 100)

References

• cve.org/CVE-2009-3555
• nvd.nist.gov/vuln/detail/CVE-2009-3555
• archives.neohapsis.com/archives/bugtraq/2013-11/0120.html
• blog.g-sec.lu/2009/11/tls-sslv3-renegotiation-vulnerability.html
• blogs.iss.net/archive/sslmitmiscsrf.html
• blogs.sun.com/security/entry/vulnerability_in_tls_protocol_during
• clicky.me/tlsvuln
• extendedsubset.com/?p=8
• extendedsubset.com/Renegotiating_TLS.pdf
• h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01945686
• h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02436041
• itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02273751
• kbase.redhat.com/faq/docs/DOC-20491
• lists.apple.com/archives/security-announce/2010//May/msg00001.html