Home/CVE/An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The e
CVE

CVE-2017-7228

An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The e

An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.

HIGH · CVSS 8.2 EPSS 0.01001
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-129Improper Validation of Array Index
▤

Affected Products & Versions

1
xenall versions
⚠

Public Exploits & PoCs

2
localXen - Broken Check in 'memory_exchange()' Permits PV Guest Breakoutverified
pocwww.exploit-db.com · 41870www.exploit-db.com
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Apr 2017 · 02:59 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

4
suse-csafSUSE-SU-2017:1080-1
suse-csafSUSE-SU-2017:1081-1
suse-csafSUSE-SU-2017:1058-1
suse-csafSUSE-SU-2017:0983-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://openwall.com/lists/oss-security/2017/04/04/3Mailing ListThird Party Advisory
http://www.debian.org/security/2017/dsa-3847
http://www.securityfocus.com/bid/97375Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038223
http://xenbits.xen.org/xsa/advisory-212.htmlPatchVendor Advisory
https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt
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