A security vulnerability in the TLS protocol (TLS 1.0 or later and SSLv3) may allow an unauthenticated, remote attacker to conduct man-in-the-middle (MITM) type of attacks where chosen plain text may be injected as a prefix in an user's TLS session. This vulnerability does not allow one to decrypt the intercepted network communication.

This issue is referenced in CVE-2009-3555

Exact nature of the impact depends on the application making use of the TLS facility. Applications which use Network Security Services (NSS), Java Secure Socket Extensions (JSSE), OpenSSL or GnuTLS libraries may be affected.

Sun is evaluating the impact of the issue on various products which make use of the TLS libraries. We are working to fix the TLS implementations according to the TLS protocol standard extensions currently being developed.

Solaris Kernel SSL proxy module KSSL does not support client renegotiation or rehandshake. It ignores the rehandshake message which is an allowed behavior by the SSL/TLS specification. Hence it is not vulnerable to this issue. KSSL (see ksslcfg(1M)) is available in Solaris 10 and OpenSolaris. It may be used to workaround the described issue.

tags: gnutls jsse nss openssl security tls vulnerability

Two security vulnerabilities exist in the Apache 2 mod_perl2(3) module
components which affect the Apache 2.0 web server bundled with Solaris
10 and the Apache 2.2 web server bundled with OpenSolaris.

The first issue, a Denial of Service (DoS) vulnerability in the "RunPerl.pm"
component (CVE-2007-1349), may allow a remote unprivileged user to
cause a Denial of Service to the Apache 2 "httpd" process.

The second issue, a Cross Site Scripting (CSS or XSS) vulnerability in the
"Status.pm" component (CVE-2009-0796), may allow a remote unprivileged
user to inject arbitrary web script or HTML. This may allow the unprivileged
user to bypass access control and gain access to unauthorized data.

Additional information regarding these issues is available at:

CVE-2007-1349 at:

CVE-2009-0796 at:

A remote unprivileged user may be able to crash an application which dynamically links to the Portable Network Graphics library (libpng(3)) due to a security vulnerability in libpng(3). The ability to crash an application is a type of Denial of Service (DoS). A number of applications which comprise the GNOME desktop environment dynamically link with libpng(3).

This issue is described in the following documents:

• CERT VU# 684664 at: https://www.kb.cert.org/vuls/id/684664
• CVE-2007-2445 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2445