vulnwire
8.2high

CVE-2017-72281 exploit

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.

Published 9 y ago · modified 4 mo ago · JSON

CVSS
8.2
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.6%
percentile 75%
Public exploits
1
Exploit-DB

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.

Exploit prediction (EPSS)

1.57% probability of exploitation in the next 30 days, higher than 75% of all scored CVEs.

Exploits and detections

  • EDB-41870 Xen - Broken Check in 'memory_exchange()' Permits PV Guest Breakout · local · 2017-04-11

CVSS scores

Assigned byVersionScoreVector
NVD3.08.2CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-129 Improper Validation of Array Index

References

  • securityfocus.com /bid/97375 · vdb-entry, x_refsource_BID, x_transferred
  • xenbits.xen.org /xsa/advisory-212.html · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2017/04/04/3 · x_refsource_CONFIRM, x_transferred
  • github.com /QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-3847 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • exploit-db.com /exploits/41870/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • googleprojectzero.blogspot.com /2017/04/pandavirtualization-exploiting-xen.html · x_refsource_MISC, x_transferred
  • securitytracker.com /id/1038223 · vdb-entry, x_refsource_SECTRACK, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.