Missing Authorization Affecting xen package, versions <4.11.4+24-gddaaccbbab-1~deb10u1


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.05% (16th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Missing Authorization vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN10-XEN-565414
  • published14 Apr 2020
  • disclosed14 Apr 2020

Introduced: 14 Apr 2020

CVE-2020-11741  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Debian:10 xen to version 4.11.4+24-gddaaccbbab-1~deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenoprof code uses the standard Xen shared ring structure. Unfortunately, this code did not treat the guest as a potential adversary: it trusts the guest not to modify buffer size information or modify head / tail pointers in unexpected ways. This can crash the host (DoS). Privilege escalation cannot be ruled out.

CVSS Scores

version 3.1