Category
Security
Release Phase
Resolved
Bug Id
6636513
Date of Resolved Release03-Apr-2008
A Security Vulnerability in Floating Point Context Switch Implementation May Result in a Denial of Service (DoS) or Data Integrity Issues
1. Impact
There are four issues that may occur with this Bug:
1. A security vulnerability in the Solaris floating point context
switch implementation may allow a local unprivileged user to cause an
arbitrary application running on the system to exit, resulting in a
Denial of Service (DoS) to that application. It is not possible to
target a particular application on the system to terminate.
2. An application executing floating point operations on the system may
get
incorrect results due
to data corruption.
3. An application, on invoking signal handlers under certain
conditions, may cause an arbitrary application running on the system to
get incorrect results leading to data integrity issues. It is not
possible to target a particular application to lead to incorrect
results.
4. An application on Solaris 10 using libc(3LIB) functions memcpy(3C)
or memset(3C) or memmove(3C) may get incorrect results, leading to data
integrity issues.
2. Contributing Factors
These issues can occur in the following releases:
x86 Platform
- Solaris 9 without patch 122301-23
- Solaris 10 without patch 127112-10
Notes:
- Solaris on the SPARC platform is not impacted by these issues.
- Solaris 8 on the x86 platform is not impacted by these issues.
- Solaris 9 on the x86 platform is not impacted by issue 4
mentioned above.
- Issues 1 and 2 may be seen only on systems that execute floating
point operations.
- Issues 3 and 4 may also be seen on systems that do not execute
any floating point operation.
3. Symptoms
The program executing floating point operation exits and dumps an
application core due to an unexpected SIGFPE. Otherwise, there will be
no symptom other than incorrect operation of an application.
4. Workaround
There is no workaround for this issue. Please see the Resolution
section
below.
5. Resolution
These issues are addressed in the following releases:
x86 Platform
- Solaris 9 with patch 122301-23 or later
- Solaris 10 with patch 127112-10 or later
For more information
on Security Sun Alerts, see 1009886.1.
This Sun Alert notification is being provided to you on an "AS IS"
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Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.ProductSolaris 9 Operating System
Solaris 10 Operating System
References
127112-10
122301-23
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