87305 : Xen GNTTABOP_get_status_frames() Function compat Hypercall Handler Infinite Loop Local DoS
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Timeline

Disclosure Date
2012-11-13

Description

Xen contains a flaw related to the compat hyerpcall handler that may allow a local denial of service. The issue is triggered when an error occurs in the GNTTABOP_get_status_frames() function, which will result in an infinite loop. This will cause a loss of availability for the program.

Classification

Location: Local Access Required
Impact: Loss of Availability
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified
OSVDB: Authentication Required

Solution

It has been reported that this issue has been fixed. Upgrade to version 4.1.4, 4.2.1, or higher, to address this vulnerability.

Products

The Linux Foundation
Xen
4.2.1 (not affected)
4.2.0
4.1.0
4.1.2
4.1.1
4.1.3
4.1.4 (not affected)
4.0.0
4.0.2
4.0.1
4.0.3
4.0.4

References

Credit

CVSSv2 Score

CVSSv2 Base Score = 2.1
Source: nvd.nist.gov | Generated: 2012-11-22 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_1

Comments

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