Auth bypass in Red Hat Libvirt
CVE-2020-10701
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.
Vulnerability class: Broken Access Control
EPSS: 0.009 (56.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Redhat Libvirt
- N/a Libvirt — versions libvirt 6.2.0
Weakness classification (CWE)
References
- secalert@redhat.com (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10701?
- CVE-2020-10701 is a medium-severity vulnerability in Red Hat Libvirt, classified under Missing Authorization. CVSS score: 6.5/10. Published 2021-05-27.
- How severe is CVE-2020-10701?
- Medium severity. CVSS v3 base score is 6.5 out of 10.