VulnerabilityModified

CVE-2009-3555

EXPLOIT ×2 ✓CRITICAL 9.8EPSS 87.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 87.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 87.26% probability · 100th percentile
Public exploits: 2 in Exploit-DB · verified · first 10 November 2009
CISA KEV: Not listed
Weakness: CWE-295, CWE-300
Affected: apache/http server · gnu/gnutls · mozilla/nss · openssl/openssl · canonical/ubuntu linux · debian/debian linux · fedoraproject/fedora · f5/nginx
Source: secalert@redhat.com

EPSS trend

EPSS 87.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-10579 source ↗	TLS - Renegotiationmultiple · RedTeam Pentesting	remote	21 December 2009	yes
EDB-10071 source ↗	Mozilla NSS - NULL Character CA SSL Certificate Validation Security Bypassmultiple · Dan Kaminsky	remote	10 November 2009	yes

References

http://archives.neohapsis.com/archives/bugtraq/2013-11/0120.htmlBroken Link
http://blog.g-sec.lu/2009/11/tls-sslv3-renegotiation-vulnerability.htmlThird Party Advisory
http://blogs.iss.net/archive/sslmitmiscsrf.htmlBroken Link
http://blogs.sun.com/security/entry/vulnerability_in_tls_protocol_duringThird Party Advisory
http://clicky.me/tlsvulnExploit, Third Party Advisory
http://extendedsubset.com/?p=8Broken Link
http://extendedsubset.com/Renegotiating_TLS.pdfBroken Link
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01945686Broken Link
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02436041Broken Link
http://itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02273751Broken Link
http://kbase.redhat.com/faq/docs/DOC-20491Third Party Advisory
http://lists.apple.com/archives/security-announce/2010//May/msg00001.htmlMailing List, Third Party Advisory
http://lists.apple.com/archives/security-announce/2010//May/msg00002.htmlMailing List, Third Party Advisory
http://lists.apple.com/archives/security-announce/2010/Jan/msg00000.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039957.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/040652.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049455.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049528.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049702.htmlThird Party Advisory
http://lists.gnu.org/archive/html/gnutls-devel/2009-11/msg00029.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00009.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-04/msg00001.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00005.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.htmlThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.