High severity · published Aug 24, 2017
CVE-2017-12134
The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive…
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
All versions, or not specified · source: NVD
XE
Xenserver · Citrix
6.0.2; 6.2.0; 6.5; 7.0; 7.1; 7.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12134
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-12134
www.debian.org
http://www.debian.org/security/2017/dsa-3981
Mailing List
http://www.openwall.com/lists/oss-security/2017/08/15/4
Third Party Advisory
http://www.securityfocus.com/bid/100343
Third Party Advisory
http://www.securitytracker.com/id/1039176
Mitigation
http://xenbits.xen.org/xsa/advisory-229.html
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1477656
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