CVE-2009-3555

Aliases:GHSA-f7w7-6pjc-wwm6
Advisory lineage Upstream: 0 Downstream: 38
Modified
Published: 09 Nov 2009, 17:00
Last modified:27 May 2026, 15:38

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
3.74% LOW
4% probability +1.44%
KEV
Not listed
Ransomware
No reports
Public exploits
5 found
Dark Web
Not detected

Timeline

09 Nov 2009, 17:00
Published
Vulnerability first disclosed
27 May 2026, 15:38
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 5.8AV:N/AC:M/Au:N/C:N/I:P/A:P

EPSS Trends

Current EPSS score: 3.74%• Percentile: 88%

Techniques & Countermeasures

  • CWE-295•Improper Certificate Validation

    The product does not validate, or incorrectly validates, a certificate.

  • CWE-300•Channel Accessible by Non-Endpoint

    The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.

Affected Systems

  • Unknown•HTTP Server

    ≤ 2.2.14

  • canonical•ubuntu_linux

    8.04 | 8.10 | 9.04 | 9.10 | 10.04 | 10.10

  • debian•debian_linux

    4.0 | 5.0 | 6.0 | 7.0 | 8.0

  • f5•nginx

    ≥ 0.1.0, ≤ 0.8.22

  • fedoraproject•fedora

    11 | 12 | 13 | 14

  • gnu•gnutls

    ≤ 2.8.5

  • org.apache.tomcat•tomcat

    ≥ 7.0.0, < 7.0.10 | ≥ 6.0.0, < 6.0.32 | ≥ 5.0.0, < 5.5.33

  • mozilla•nss

    ≤ 3.12.4

  • Unknown•OpenSSL

    ≤ 0.9.8k | 1.0

References (355)