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Off-by-one Error Affecting xen package, versions <4.14.0-r3

Severity

 Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.06% (29th percentile)

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  • Snyk ID SNYK-ALPINE320-XEN-7012383
  • published 23 May 2024
  • disclosed 24 Nov 2020
Report a new vulnerability Found a mistake?

Introduced: 24 Nov 2020

CVE-2020-29040 Open this link in a new tab
CWE-193 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.14.0-r3 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 Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

CVSS Scores

version 3.1
Expand this section

NVD

Recommended
8.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High