100445 : AMD Microcode Locked Instruction Handling Local DoS
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Timeline

Disclosure Date
2011-11-25

Description

AMD Microcode contains a flaw that may allow a local denial of service. The issue is triggered handling the interaction between write-combined memory types and locked instructions. With a specially crafted application, a local attacker can crash arbitrary programs running on the system.

Classification

Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Availability
Solution: Solution Unknown
Exploit: Exploit Public
Disclosure: Uncoordinated Disclosure
OSVDB: Authentication Required

Solution

Xen has released a patch to address this vulnerability, in addition to possible workarounds.

Products

Advanced Micro Devices, Inc.
Microcode
Unspecified
Citrix Systems, Inc.
XenServer
5.6
6.0.2
6.1
6.0.0
5.6 SP2
5.6 FP1
6.2
6.2 SP1
Red Hat, Inc.
Kernel
2.6.18-371.6.1.el5 (not affected)
Red Hat Enterprise Linux
5

References

Credit

CVSSv2 Score

CVSSv2 Base Score = 4.7
Source: nvd.nist.gov | Generated: 2013-11-29 | Disagree? | There are 1 more: View All

Access_vector_0 Access_complexity_1 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_2

Comments

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