Vulnerability-Lookup

CVE-2023-39321 (GCVE-0-2023-39321)

Vulnerability from cvelistv5 – Published: 2023-09-08 16:13 – Updated: 2025-02-13 17:02

Title

Panic when processing post-handshake message on QUIC connections in crypto/tls

Summary

Processing an incomplete post-handshake message for a QUIC connection can cause a panic.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-26 17:23 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

Go CNA under the Google root

CNA scorecard E 42/100 over 75 records in the last 180 days details

References

6 references

URL	Tags
https://go.dev/issue/62266
https://go.dev/cl/523039
https://groups.google.com/g/golang-dev/c/2C5vbR-U…
https://pkg.go.dev/vuln/GO-2023-2044
https://security.netapp.com/advisory/ntap-2023102…
https://security.gentoo.org/glsa/202311-09

Impacted products

1 product

Vendor	Product	Version	CPE status
Go standard library	crypto/tls	Affected: 1.21.0-0 , < 1.21.1 (semver)	guessed

Credits

Marten Seemann

Show details on NVD website

JSON

To clipboard

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RHSA-2024:2988

Vulnerability from csaf_opensuse - Published: 2024-05-22 09:48 - Updated: 2026-10-14 12:44

Summary

Red Hat Security Advisory: container-tools:rhel8 security update

Severity

Moderate

Scope

16 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

A flaw was found in Golang. Processing an incomplete post-handshake message for a QUIC connection caused a panic.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 261 products

https://access.redhat.com/errata/RHSA-2024:2988

Open the full advisory

RHSA-2025:7256

Vulnerability from csaf_opensuse - Published: 2025-05-13 08:49 - Updated: 2026-10-14 12:44

Summary

Red Hat Security Advisory: git-lfs security update

Severity

Moderate

Scope

6 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

A flaw was found in Golang. Processing an incomplete post-handshake message for a QUIC connection caused a panic.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2025:7256

Open the full advisory

RHSA-2024:3352

Vulnerability from csaf_redhat - Published: 2024-05-23 15:28 - Updated: 2026-10-14 12:44

Summary

Red Hat Security Advisory: Red Hat OpenStack Platform 16.2 (etcd) security update

Severity

Important

Scope

10 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

A flaw was found in Golang. Processing an incomplete post-handshake message for a QUIC connection caused a panic.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 7 products

https://access.redhat.com/errata/RHSA-2024:3352

Open the full advisory

RHSA-2024:3467

Vulnerability from csaf_redhat - Published: 2024-05-29 13:33 - Updated: 2026-10-14 12:44

Summary

Red Hat Security Advisory: Red Hat OpenStack Platform 16.1 (etcd) security update

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

A flaw was found in Golang. Processing an incomplete post-handshake message for a QUIC connection caused a panic.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 7 products

https://access.redhat.com/errata/RHSA-2024:3467

Open the full advisory

SUSE-SU-2023:3701-1

Vulnerability from csaf_suse - Published: 2023-09-20 09:19 - Updated: 2023-09-20 09:19

Summary

Security update for go1.21

Severity

Important

Scope

5 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 46 products

Open the full advisory

SUSE-SU-2023:4469-1

Vulnerability from csaf_suse - Published: 2023-11-16 17:59 - Updated: 2023-11-16 17:59

Summary

Security update for go1.21-openssl

Severity

Moderate

Scope

10 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 48 products

Open the full advisory

UBUNTU-CVE-2023-39321 (CVE-2023-39321)

Vulnerability from osv_ubuntu – Published: 2023-09-08 17:15 – Updated: 2025-07-16 05:09 – Source website

Withdrawn 2025-07-18

Details

Processing an incomplete post-handshake message for a QUIC connection can cause a panic.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-39321	REPORT
	https://go.dev/issue/62266	REPORT
	https://github.com/golang/go/commit/91a4e74b98179…	REPORT
	https://groups.google.com/g/golang-announce/c/Fm5…	REPORT
	https://groups.google.com/g/golang-dev/c/2C5vbR-U…	REPORT
	https://go.dev/cl/523039	REPORT
	https://pkg.go.dev/vuln/GO-2023-2044	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-39321	REPORT

JSON

To clipboard

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        }
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      "versions": []
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  ],
  "aliases": [],
  "details": "Processing an incomplete post-handshake message for a QUIC connection can cause a panic.",
  "id": "UBUNTU-CVE-2023-39321",
  "modified": "2025-07-16T05:09:35Z",
  "published": "2023-09-08T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-39321"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/62266"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/golang/go/commit/91a4e74b98179f63a27dbff1ad68ddd0ed64363a"
    },
    {
      "type": "REPORT",
      "url": "https://groups.google.com/g/golang-announce/c/Fm51GRLNRvM"
    },
    {
      "type": "REPORT",
      "url": "https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/cl/523039"
    },
    {
      "type": "REPORT",
      "url": "https://pkg.go.dev/vuln/GO-2023-2044"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-39321"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-39321"
  ],
  "withdrawn": "2025-07-18T16:54:36Z"
}

WID-SEC-W-2023-2280

Vulnerability from csaf_certbund - Published: 2023-09-06 22:00 - Updated: 2025-05-29 22:00

Summary

Golang Go: Mehrere Schwachstellen

Severity

Mittel

Scope

5 vulnerabilities in this advisory, including CVE-2023-39321.

CVE-2023-39321

Known affected: 15 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2023-39321 (GCVE-0-2023-39321)

RHSA-2024:2988

RHSA-2025:7256

RHSA-2024:3352

RHSA-2024:3467

SUSE-SU-2023:3701-1

SUSE-SU-2023:4469-1

UBUNTU-CVE-2023-39321 (CVE-2023-39321)

WID-SEC-W-2023-2280

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour