CWE
212
Advisory Published
Updated

CVE-2020-11740

First published: Tue Apr 14 2020(Updated: )

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Xen Xen>=3.2.0<=4.13.0
Xen Xen=4.13.0-rc1
Xen Xen=4.13.0-rc2
Debian Debian Linux=10.0
Fedoraproject Fedora=30
Fedoraproject Fedora=31
Fedoraproject Fedora=32
openSUSE Leap=15.1
debian/xen
4.14.6-1
4.14.5+94-ge49571868d-1
4.17.3+10-g091466ba55-1~deb12u1
4.17.3+36-g54dacb5c02-1

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Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2020-11740.

  • What is the title of this vulnerability?

    The title of this vulnerability is 'An issue was discovered in xenoprof in Xen through 4.13.x allowing guest OS users (without active profiling) to obtain sensitive information about other guests.'

  • What is the impact of this vulnerability?

    This vulnerability allows unprivileged guest OS users to obtain sensitive information about other guests.

  • Which software versions are affected by this vulnerability?

    The affected software versions include Xen 4.11.3+24- (Ubuntu) and Xen 4.11.4+107-gef32c7afa2-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, and 4.17.2-1 (Debian).

  • Are there any remediation steps available for this vulnerability?

    Yes, the recommended remedy is to update to the specified versions of Xen for Ubuntu (4.11.3+24-) and Debian (4.11.4+107-gef32c7afa2-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, or 4.17.2-1).

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