Vulnerability-Lookup

OPENSUSE-SU-2021:0468-1

Vulnerability from csaf_opensuse - Published: 2021-03-25 08:10 - Updated: 2026-09-20 19:22

Summary

Security update for nghttp2

Severity

Important

Notes

Title of the patch: Security update for nghttp2

Description of the patch: This update for nghttp2 fixes the following issues: - CVE-2020-11080: HTTP/2 Large Settings Frame DoS (bsc#1181358) This update was imported from the SUSE:SLE-15:Update update project.

Patchnames: openSUSE-2021-468

CVE-2020-11080

7.5 (High)


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

Affected products

Recommended 14 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 15.2:libnghttp2-14-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2-14-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2-14-32bit-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2-devel-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2-devel-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2_asio-devel-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2_asio-devel-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2_asio1-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2_asio1-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:libnghttp2_asio1-32bit-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:nghttp2-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:nghttp2-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:python3-nghttp2-0:1.40.0-lp152.2.6.1.i586	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.2:python3-nghttp2-0:1.40.0-lp152.2.6.1.x86_64	—	Vendor Fix

Threats

Impact important

References

11 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://lists.opensuse.org/archives/list/security…	self
https://lists.opensuse.org/archives/list/security…	self
https://bugzilla.suse.com/1172442	self
https://bugzilla.suse.com/1181358	self
https://www.suse.com/security/cve/CVE-2020-11080/	self
https://www.suse.com/security/cve/CVE-2020-11080	external
https://bugzilla.suse.com/1172441	external
https://bugzilla.suse.com/1172442	external
https://bugzilla.suse.com/1181358	external

JSON

To clipboard

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CVE-2020-11080 (GCVE-0-2020-11080)

Vulnerability from cvelistv5 – Published: 2020-06-03 00:00 – Updated: 2025-06-09 15:45

Title

Denial of service in nghttp2

Summary

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

Severity

3.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-09 15:44 UTC

CWE

CWE-707 - Improper Enforcement of Message or Data Structure

Assigner

GitHub_M mitre root Scorecard

References

14 references

URL	Tags
https://www.debian.org/security/2020/dsa-4696	vendor-advisory
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.oracle.com/security-alerts/cpujul2020.html
https://github.com/nghttp2/nghttp2/security/advis…
https://github.com/nghttp2/nghttp2/commit/336a98f…
https://github.com/nghttp2/nghttp2/commit/f8da73b…
https://www.oracle.com/security-alerts/cpuoct2020.html
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://www.oracle.com/security-alerts/cpuapr2022.html
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
nghttp2	nghttp2	Affected: < 1.41.0

Show details on NVD website

JSON

To clipboard

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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.

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

OPENSUSE-SU-2021:0468-1

CVE-2020-11080 (GCVE-0-2020-11080)

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Related by attack behaviour