CVE catalog
CVE-2023-35945
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 `GOAWA
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 1.65% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | envoy | Not reported | 1.23.11 | fixed |
| Cpe | envoy | Not reported | 1.24.9 | fixed |
| Cpe | envoy | Not reported | 1.25.8 | fixed |
| Cpe | envoy | Not reported | 1.26.3 | fixed |
| Cpe | nghttp2 | Not reported | 1.55.1 | fixed |
| Alpine | nghttp2 | 3.15 | 1.46.0-r1 | fixed |
| Alpine | nghttp2 | 3.16 | 1.47.0-r1 | fixed |
| Alpine | nghttp2 | 3.17 | 1.51.0-r1 | fixed |
| Opensuse | nghttp2 | tumbleweed | 1.55.1-1.1 | fixed |
| Suse | nghttp2 | linux enterprise high performance computing 15 sp1-ltss | 1.40.0-150000.3.14.1 | fixed |
| Suse | nghttp2 | linux enterprise server 15 sp1-ltss | 1.40.0-150000.3.14.1 | fixed |
| Suse | nghttp2 | linux enterprise server for sap applications 15 sp1 | 1.40.0-150000.3.14.1 | fixed |
| Suse | nghttp2 | linux enterprise software development kit 12 sp5 | 1.39.2-3.10.1 | fixed |
| Suse | nghttp2 | linux enterprise server 12 sp5 | 1.39.2-3.10.1 | fixed |
| Suse | nghttp2 | linux enterprise server for sap applications 12 sp5 | 1.39.2-3.10.1 | fixed |
| Suse | nghttp2 | linux enterprise micro 5.3 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise micro 5.4 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise micro 5.5 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise module for basesystem 15 sp4 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise module for basesystem 15 sp5 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise high performance computing 15 sp2-ltss | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise high performance computing 15 sp3-espos | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise high performance computing 15 sp3-ltss | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise server 15 sp2-ltss | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise server 15 sp3-ltss | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise server for sap applications 15 sp2 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise server for sap applications 15 sp3 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | manager proxy 4.2 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | manager server 4.2 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise micro 5.1 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | linux enterprise micro 5.2 | 1.40.0-150200.9.1 | fixed |
| Suse | nghttp2 | enterprise storage 7.1 | 1.40.0-150200.9.1 | fixed |
| Opensuse | nghttp2 | leap 15.4 | 1.40.0-150200.9.1 | fixed |
| Opensuse | nghttp2-python | leap 15.4 | 1.40.0-150200.9.1 | fixed |
| Opensuse | nghttp2 | leap 15.5 | 1.40.0-150200.9.1 | fixed |
| Opensuse | nghttp2-python | leap 15.5 | 1.40.0-150200.9.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | envoy | cpe | Not reported | 1.23.11 | Not reported | NVD-CVE-2023-35945 | Not reported |
| Cpe | envoy | cpe | Not reported | 1.24.9 | Not reported | NVD-CVE-2023-35945 | Not reported |
| Cpe | envoy | cpe | Not reported | 1.25.8 | Not reported | NVD-CVE-2023-35945 | Not reported |
| Cpe | envoy | cpe | Not reported | 1.26.3 | Not reported | NVD-CVE-2023-35945 | Not reported |
| Cpe | nghttp2 | cpe | Not reported | 1.55.1 | Not reported | NVD-CVE-2023-35945 | Not reported |
| Alpine | nghttp2 | apk | 3.15 | 1.46.0-r1 | Not reported | ALPINE-CVE-2023-35945 | Not reported |
| Alpine | nghttp2 | apk | 3.16 | 1.47.0-r1 | Not reported | ALPINE-CVE-2023-35945 | Not reported |
| Alpine | nghttp2 | apk | 3.17 | 1.51.0-r1 | Not reported | ALPINE-CVE-2023-35945 | Not reported |
| Opensuse | nghttp2 | rpm | tumbleweed | 1.55.1-1.1 | Not reported | OPENSUSE-SU-2024:13062-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise high performance computing 15 sp1-ltss | 1.40.0-150000.3.14.1 | Not reported | SUSE-SU-2023:4102-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server 15 sp1-ltss | 1.40.0-150000.3.14.1 | Not reported | SUSE-SU-2023:4102-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server for sap applications 15 sp1 | 1.40.0-150000.3.14.1 | Not reported | SUSE-SU-2023:4102-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise software development kit 12 sp5 | 1.39.2-3.10.1 | Not reported | SUSE-SU-2023:3842-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server 12 sp5 | 1.39.2-3.10.1 | Not reported | SUSE-SU-2023:3842-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server for sap applications 12 sp5 | 1.39.2-3.10.1 | Not reported | SUSE-SU-2023:3842-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise micro 5.3 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise micro 5.4 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise micro 5.5 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise module for basesystem 15 sp4 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise module for basesystem 15 sp5 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise high performance computing 15 sp2-ltss | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise high performance computing 15 sp3-espos | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise high performance computing 15 sp3-ltss | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server 15 sp2-ltss | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server 15 sp3-ltss | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server for sap applications 15 sp2 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise server for sap applications 15 sp3 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | manager proxy 4.2 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | manager server 4.2 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise micro 5.1 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | linux enterprise micro 5.2 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Suse | nghttp2 | rpm | enterprise storage 7.1 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Opensuse | nghttp2 | rpm | leap 15.4 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Opensuse | nghttp2-python | rpm | leap 15.4 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Opensuse | nghttp2 | rpm | leap 15.5 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
| Opensuse | nghttp2-python | rpm | leap 15.5 | 1.40.0-150200.9.1 | Not reported | SUSE-SU-2023:3997-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-943925.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_3842-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2023-35945]
- [https://osv.dev/vulnerability/ALPINE-CVE-2023-35945]
- [https://osv.dev/vulnerability/SUSE-SU-2023:3842-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:3997-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4102-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13062-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-35945.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2058.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]