CVE-2022-34038 — Etcd v3

Etcd v3.5.4 allows remote attackers to cause a denial of service via function PageWriter.write in pagewriter.go. NOTE: the vendor's position is that this is not a vulnerability.

01What is this vulnerability?

Etcd v3.5.4 allows remote attackers to cause a denial of service via function PageWriter.write in pagewriter.go. NOTE: the vendor's position is that this is not a vulnerability.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-22T00:00:00.000Z
• Last modified: 2024-10-03T17:40:18.755Z

09References

• github.com — https://github.com/etcd-io/etcd/pull/14022
• github.com — https://github.com/etcd-io/etcd/pull/14452
• github.com — https://github.com/golang/vulndb/issues/2016#issuecomment-1698677762
• go-review.googlesource.com — https://go-review.googlesource.com/c/vulndb/+/524456
• go-review.googlesource.com — https://go-review.googlesource.com/c/vulndb/+/524456/2/data/excluded/GO-2023-201…