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Vulnerability · Published May 27, 2021 · Assigned by redhat

CVE-2020-10701

Medium 6.5

In plain English

A medium-severity missing authorization in libvirt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.9%top 41.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A missing authorization flaw was found in the libvirt API responsible for changing the QEMU agent response timeout. This flaw allows read-only connections to adjust the time that libvirt waits for the QEMU guest agent to respond to agent commands. Depending on the timeout value that is set, this flaw can make guest agent commands fail because the agent cannot respond in time. Unprivileged users with a read-only connection could abuse this flaw to set the response timeout for all guest agent messages to zero, potentially leading to a denial of service. This flaw affects libvirt versions before 6.2.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libvirt6.0.0-7DEBIAN-CVE-2020-10701
Debian:13libvirt6.0.0-7DEBIAN-CVE-2020-10701
Debian:14libvirt6.0.0-7DEBIAN-CVE-2020-10701

Affected products (as reported)

VendorProductVersions
n/a libvirt libvirt 6.2.0

Weakness: CWE-862

References