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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2015-2877 Detail

Disputed     

Current Description

Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 through 4.x does not prevent use of a write-timing side channel, which allows guest OS users to defeat the ASLR protection mechanism on other guest OS instances via a Cross-VM ASL INtrospection (CAIN) attack. NOTE: the vendor states "Basically if you care about this attack vector, disable deduplication." Share-until-written approaches for memory conservation among mutually untrusting tenants are inherently detectable for information disclosure, and can be classified as potentially misunderstood behaviors rather than vulnerabilities


View Analysis Description

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.antoniobarresi.com/files/cain_advisory.txt Technical Description  Third Party Advisory 
http://www.kb.cert.org/vuls/id/935424 Third Party Advisory  US Government Resource 
http://www.securityfocus.com/bid/76256 Third Party Advisory  VDB Entry 
https://bugzilla.redhat.com/show_bug.cgi?id=1252096 Issue Tracking  Third Party Advisory 
https://www.kb.cert.org/vuls/id/BGAR-A2CNKG Third Party Advisory  US Government Resource 
https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH Third Party Advisory  US Government Resource 
https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf Technical Description  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-2877
NVD Published Date:
03/03/2017
NVD Last Modified:
08/06/2024
Source:
CERT/CC