Missing Initialization of Resource Affecting xen-devel package, versions <4.10.4_10-3.31.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES150-XENDEVEL-2708761
  • published14 Apr 2022
  • disclosed17 Jun 2020

Introduced: 17 Jun 2020

CVE-2020-11741  (opens in a new tab)
CWE-909  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 xen-devel to version 4.10.4_10-3.31.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-devel package and not the xen-devel package as distributed by SLES. See How to fix? for SLES:15.0 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