Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2016-9377

Incorrect Calculation

Published: Feb 22, 2017 | Modified: Apr 20, 2025
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
3.5 MODERATE
AV:N/AC:M/Au:S/C:N/I:N/A:P
RedHat/V3
6.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-9377
CWEhttps://cwe.mitre.org/data/definitions/682.html

Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.

Weakness

The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Affected Software

NameVendorStart VersionEnd Version
XenXen4.5.0 (including)4.5.0 (including)
XenXen4.5.1 (including)4.5.1 (including)
XenXen4.5.2 (including)4.5.2 (including)
XenXen4.5.3 (including)4.5.3 (including)
XenXen4.5.5 (including)4.5.5 (including)
XenXen4.6.0 (including)4.6.0 (including)
XenXen4.6.1 (including)4.6.1 (including)
XenXen4.6.3 (including)4.6.3 (including)
XenXen4.6.4 (including)4.6.4 (including)
XenXen4.7.0 (including)4.7.0 (including)
XenXen4.7.1 (including)4.7.1 (including)
XenUbuntudevel*
XenUbuntuesm-infra/xenial*
XenUbuntuxenial*
XenUbuntuyakkety*
XenUbuntuzesty*

Potential Mitigations

  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).

References

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