Bug 292023 (CVE-2009-3555)

Summary:	[TRACKER] TLS Session Renegotiation MITM vulnerability (CVE-2009-3555)
Product:	Gentoo Security	Reporter:	Alex Legler (RETIRED) <a3li>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	n-roeser, thoger
Priority:	High	Keywords:	Tracker
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://extendedsubset.com/?p=8
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=703468
Whiteboard:	A3 [glsa]
Package list:		Runtime testing required:	---
Bug Depends on:	292022, 292025, 292034, 293158, 293785, 293894, 305343, 306579, 306583, 306925
Bug Blocks:

Description Alex Legler (RETIRED) archtester

2009-11-05 22:22:04 UTC

From $URL:
Transport Layer Security (TLS, RFC 5246 and previous, including SSL v3 and previous) is subject to a number of serious man-in-the-middle (MITM) attacks related to renegotiation. In general, these problems allow an MITM to inject an arbitrary amount of chosen plaintext into the beginning of the application protocol stream, leading to a variety of abuse possibilities. In particular, practical attacks against HTTPS client certificate authentication have been demonstrated against recent versions of both Microsoft IIS and Apache httpd on a variety of platforms and in conjunction with a variety of client applications. Cases not involving client certificates have been demonstrated as well. Although this research has focused on the implications specifically for HTTP as the application protocol, the research is ongoing and many of these attacks are expected to generalize well to other protocols layered on TLS.

Discovered by Marsh Ray of PhoneFactor and independently by Martin Rex with SAP.

References:
http://extendedsubset.com/Renegotiating_TLS.pdf
http://www.ietf.org/mail-archive/web/tls/current/msg03928.html
https://bugzilla.redhat.com/show_bug.cgi?id=533125

Comment 1 Alex Legler (RETIRED) archtester

2009-11-12 23:36:12 UTC

CVE-2009-3555 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3555):
  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, 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.

Comment 2 Paweł Hajdan, Jr. (RETIRED) gentoo-dev

2011-01-10 11:55:57 UTC

All open bugs blocking this are in [glsa] status.

Comment 3 Aaron Bauman (RETIRED) gentoo-dev

2016-03-05 12:41:18 UTC

All dependent bugs have been closed.