CVE-2022-34038
etcd: remote DoS via PageWriter.write
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 22, 2023
Updated · June 27, 2026
Description
A flaw was found in the etcd package. Affected versions of etcd allow remote attackers to cause a denial of service via the PageWriter.write function in pagewriter.go, possibly affecting system availability.
Statement
The only way to trigger this CVE is to dynamically change an unexported variable's value at runtime, which is not possible in any of the Red Hat products. Although the affected code is present in the codebase, we have rated this as a Moderate impact.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write