CVE-2020-11741

 

Published at: - 14-04-2020 03:15

Last modified: - 03-05-2022 04:06

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://xenbits.xen.org/xsa/advisory-313.html
• http://xenbits.xen.org/xsa/advisory-313.html
• [oss-security] 20200414 Xen Security Advisory 313 v3 (CVE-2020-11740,CVE-2020-11741) - multiple xenoprof issues-Mailing List, Patch, Third Party Advisory
• FEDORA-2020-440457afe4-Mailing List, Third Party Advisory
• FEDORA-2020-295ed0b1e0-Mailing List, Third Party Advisory
• openSUSE-SU-2020:0599-Mailing List, Third Party Advisory
• FEDORA-2020-cbc3149753-Mailing List, Third Party Advisory
• GLSA-202005-08-Third Party Advisory
• DSA-4723-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-11741

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures