Description
Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| envoyproxy | envoy | >= 1.26.0, < 1.26.3, >= 1.25.0, < 1.25.8, >= 1.24.0, < 1.24.9, >= 1.23.0, < 1.23.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES 15 SP4 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES 15 SP3 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES 15 SP2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES 15 SP1 | nghttp2 | 1.40.0-150000.3.14.1 | SUSE-SU-2023:4102-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | nghttp2 | 1.39.2-3.10.1 | SUSE-SU-2023:3842-1 |
| SLES for SAP 15 SP3 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES for SAP 15 SP2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLES for SAP 15 SP1 | nghttp2 | 1.40.0-150000.3.14.1 | SUSE-SU-2023:4102-1 |
| SLES for SAP 12 SP5 | nghttp2 | 1.39.2-3.10.1 | SUSE-SU-2023:3842-1 |
| SLE Micro 5.5 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE Micro 5.4 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE Micro 5.3 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE Micro 5.2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE Micro 5.1 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE HPC 15 SP3 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE HPC 15 SP2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SLE HPC 15 SP1 | nghttp2 | 1.40.0-150000.3.14.1 | SUSE-SU-2023:4102-1 |
| SUSE Manager Server 4.2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SUSE Manager Proxy 4.2 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| SUSE Enterprise Storage 7.1 | nghttp2 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | nghttp2 | 1.55.1-1.1 | openSUSE-SU-2024:13062-1 |
| openSUSE Leap 15.5 | nghttp2 +1 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
| openSUSE Leap 15.4 | nghttp2 +1 | 1.40.0-150200.9.1 | SUSE-SU-2023:3997-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.17 | nghttp2 | 1.51.0-r1 | — |
| Alpine v3.16 | nghttp2 | 1.47.0-r1 | — |
| Alpine v3.15 | nghttp2 | 1.46.0-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | ecs-service-connect-agent | v1.26.4.0-1.amzn2023 | ALAS2023-2023-300 |
| Amazon Linux 2023 | nghttp2 +2 | 1.55.1-1.amzn2023.0.1 | ALAS2023-2023-278 |
| Amazon Linux 2023 | nodejs +4 | 1:18.12.1-1.amzn2023.0.9 | ALAS2023-2023-290 |
| Amazon Linux 2023 | npm | 1:8.19.2-1.18.12.1.1.amzn2023.0.9 | ALAS2023-2023-290 |
| Amazon Linux 2023 | v8-devel | 2:10.2.154.15-1.18.12.1.1.amzn2023.0.9 | ALAS2023-2023-290 |
| Amazon Linux 2 | nghttp2 +2 | 1.41.0-1.amzn2.0.1 | ALAS2-2023-2180 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | cmake | 3.21.4-8 | — |
| Azure Linux 2 (CBL-Mariner) | nghttp2 | 1.46.0-3 | — |
| Azure Linux 2 (CBL-Mariner) | nodejs | 16.20.2-2 | — |
| Azure Linux 2 (CBL-Mariner) | nodejs18 | 18.17.1-2 | — |
Advisories 15
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- ICSA-25-203-04 Schneider Electric EcoStruxure Power Operation (Update A) CISA ICS & IT advisories · Feb 25, 2026
- SEVD-2025-189-03 EcoStruxure™ Power Operation Schneider Electric CPCERT · Feb 10, 2026
- openSUSE-SU-2024:13062-1 libnghttp2-14-1.55.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4102-1 Security update for nghttp2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3842-1 Security update for nghttp2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3997-1 Security update for nghttp2 SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- SSA-943925 SSA-943925: Multiple Vulnerabilities in SINEC NMS before V2.0 SP1 Siemens ProductCERT · Mar 12, 2024
- ICSA-24-046-15 Siemens SINEC NMS CISA ICS & IT advisories · Mar 12, 2024
- WID-SEC-2023-2058 Red Hat OpenShift Service Mesh und Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 8, 2023
- ALAS2023-2023-300 Important: ecs-service-connect-agent security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 23, 2023
- ALAS2023-2023-278 Important: nghttp2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 9, 2023
- ALAS2023-2023-290 Important: nodejs security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 9, 2023
- ALAS2-2023-2180 Important: nghttp2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 8, 2023