NVD

CVE-2015-2877 Detail

Description

** DISPUTED ** 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.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 3.3 LOW

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

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	NIST

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

2 change records found show changes

Reanalysis by NIST 6/04/2020 3:29:02 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR cpe:2.3:o:redhat:enterprise_linux:4.0::::::: cpe:2.3:o:redhat:enterprise_linux:5.0::::::: cpe:2.3:o:redhat:enterprise_linux:6.0::::::: cpe:2.3:o:redhat:enterprise_linux:7.0:::::::
Removed	CPE Configuration	Record truncated, showing 500 of 60456 characters. View Entire Change Record OR cpe:2.3:o:linux:linux_kernel:2.6.4::::::: cpe:2.3:o:linux:linux_kernel:2.6.4:rc1::::::* cpe:2.3:o:linux:linux_kernel:2.6.4:rc2::::::* cpe:2.3:o:linux:linux_kernel:2.6.4:rc3::::::* cpe:2.3:o:linux:linux_kernel:2.6.5::::::: cpe:2.3:o:linux:linux_kernel:2.6.5:rc1::::::* cpe:2.3:o:linux:linux_kernel:2.6.5:rc2::::::* cpe:2.3:o:linux:linux_kernel:2.6.5:rc3::::::* cpe:2.3:o:linux:linux_kernel:2.6.6::*:
Removed	CVSS V3	NIST AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Added	CVSS V3.1		NIST AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=1252096 Issue Tracking	https://bugzilla.redhat.com/show_bug.cgi?id=1252096 Issue Tracking, Third Party Advisory

Initial Analysis by NIST 3/16/2017 11:19:41 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 60456 characters. View Entire Change Record OR cpe:2.3:o:linux:linux_kernel:2.6.32::::::: cpe:2.3:o:linux:linux_kernel:2.6.32:rc1::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc3::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc4::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc5::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc6::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc7::::::* cpe:2.3:o:linux:linux_kernel:2.6.32:rc8::::::* *cpe:2.3:o:linux:linux_kernel:
Added	CVSS V2		(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Added	CVSS V3		AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Added	CWE		CWE-200
Changed	Reference Type	http://www.antoniobarresi.com/files/cain_advisory.txt No Types Assigned	http://www.antoniobarresi.com/files/cain_advisory.txt Technical Description, Third Party Advisory
Changed	Reference Type	http://www.kb.cert.org/vuls/id/935424 No Types Assigned	http://www.kb.cert.org/vuls/id/935424 Third Party Advisory, US Government Resource
Changed	Reference Type	http://www.securityfocus.com/bid/76256 No Types Assigned	http://www.securityfocus.com/bid/76256 Third Party Advisory, VDB Entry
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=1252096 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=1252096 Issue Tracking
Changed	Reference Type	https://www.kb.cert.org/vuls/id/BGAR-A2CNKG No Types Assigned	https://www.kb.cert.org/vuls/id/BGAR-A2CNKG Third Party Advisory, US Government Resource
Changed	Reference Type	https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH No Types Assigned	https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH Third Party Advisory, US Government Resource
Changed	Reference Type	https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf No Types Assigned	https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf Technical Description, Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2015-2877
NVD Published Date:
03/03/2017
NVD Last Modified:
06/04/2020
Source:
CERT/CC

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database