Note: This is an archival copy of Security Sun Alert 260528 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1020547.1.
Solaris 10 Operating System
Date of Resolved Release
A security vulnerability in the GnuTLS (libgnutls(3)) library X.509 certificate chain validation:
A Security vulnerability in GnuTLS (libgnutls(3)) library X.509 certificate chain validation may cause client applications to trust certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate. This may allow a remote unprivileged user to carry out man-in-the-middle type of attacks using forged serer certificates.
Evolution(evolution(1)) and Remote Desktop Applications are examples of applications which use this vulnerable library.
This vulnerability is also described in the following document:
2. Contributing Factors
This issue can occur in the following releases:
Note 2: OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. To determine the base build of OpenSolaris, the following command can be used:
$ uname -vA system is only affected by this issue if it is running applications which use the affected libgnutls(3) library. To determine if an application has a dynamic dependency on the libgnutls(3) library, the ldd(1) utility can be used. For example, to check if Evolution(evolution(1)) has a dependency on GnuTLS, the following command can be used:
$ ldd /usr/bin/evolution | grep libgnutlsNote: Some applications may use libgnutls(3) but not report libgnutls(3) as a dynamic dependency with ldd(1) if the library is loaded by dlopen(3C). Therefore, to display all shared objects used by an application, pldd(1) should be used against the running process. To check if libgnutls(3) is used by a running process, the following command can be used:
$ pldd <pid of application> | grep libgnutls
There are no predictable symptoms that would indicate the described issue has occurred.
There is no workaround for this issue. Please see the Resolution section below.
This issue is addressed in the following releases:
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