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.

An update of the nghttp2 package has been released.

The version of Siemens SINEC NMS installed on the remote host is prior to 2.0.1.0. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA-943925 advisory.

  - coreruleset (aka OWASP ModSecurity Core Rule Set) through 3.3.4 does not detect multiple Content-Type     request headers on some platforms. This might allow attackers to bypass a WAF with a crafted payload,     aka Content-Type confusion between the WAF and the backend application. This occurs when the web     application relies on only the last Content-Type header. Other platforms may reject the additional     Content-Type header or merge conflicting headers, leading to detection as a malformed header.
    (CVE-2023-38199)

  - Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request     Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of     RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied     request-target (URL) data and is then re-inserted into the proxied request-target using variable     substitution. For example, something like: RewriteEngine on RewriteRule ^/here/(.*)     http://example.com:8080/elsewhere?$1; [P] ProxyPassReverse /here/ http://example.com:8080/ Request     splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended     URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version     2.4.56 of Apache HTTP Server. (CVE-2023-25690)

  - The use of `Module._load()` can bypass the policy mechanism and require modules outside of the policy.json     definition for a given module. This vulnerability affects all users using the experimental policy     mechanism in all active release lines: 16.x, 18.x and, 20.x. Please note that at the time this CVE was     issued, the policy is an experimental feature of Node.js. (CVE-2023-32002)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the nghttp2 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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.
    (CVE-2023-35945)

  - The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation     can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the nghttp2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - 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.
    (CVE-2023-35945)

  - The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation     can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the nghttp2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - 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.
    (CVE-2023-35945)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the nghttp2 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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.
    (CVE-2023-35945)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4102-1 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:3997-1 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:3842-1 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of ecs-service-connect-agent installed on the remote host is prior to v1.26.4.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2ECS-2023-006 advisory.

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with     permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC     payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's     domain configuration. (CVE-2023-35941)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause     a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
    (CVE-2023-35942)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the     `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the     `origin` header in the Envoy configuration. (CVE-2023-35943)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-     case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes     such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections.
    With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme     values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive.
    There are no known workarounds for this issue. (CVE-2023-35944)

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-300 advisory.

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with     permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC     payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's     domain configuration. (CVE-2023-35941)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause     a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
    (CVE-2023-35942)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the     `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the     `origin` header in the Envoy configuration. (CVE-2023-35943)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-     case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes     such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections.
    With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme     values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive.
    There are no known workarounds for this issue. (CVE-2023-35944)

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of nghttp2 installed on the remote host is prior to 1.33.0-1.1.7. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1793 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-278 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of nghttp2 installed on the remote host is prior to 1.41.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2180 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-290 advisory.

  - Versions of the package semver before 7.5.2 are vulnerable to Regular Expression Denial of Service (ReDoS)     via the function new Range, when untrusted user data is provided as a range. (CVE-2022-25883)

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of nghttp2 installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-35945 advisory.

  - 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.
    (CVE-2023-35945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
204135	Photon OS 4.0: Nghttp2 PHSA-2023-4.0-0496	Nessus	PhotonOS Local Security Checks	high
204004	Photon OS 3.0: Nghttp2 PHSA-2023-3.0-0673	Nessus	PhotonOS Local Security Checks	high
203589	Photon OS 5.0: Nghttp2 PHSA-2023-5.0-0126	Nessus	PhotonOS Local Security Checks	high
191429	Siemens SINEC NMS < V2.0 SP1 Multiple Vulnerabilities	Nessus	Windows	critical
188925	EulerOS 2.0 SP9 : nghttp2 (EulerOS-SA-2023-3314)	Nessus	Huawei Local Security Checks	high
188847	EulerOS 2.0 SP9 : nghttp2 (EulerOS-SA-2023-3346)	Nessus	Huawei Local Security Checks	high
188791	EulerOS Virtualization 2.9.0 : nghttp2 (EulerOS-SA-2024-1019)	Nessus	Huawei Local Security Checks	high
188709	EulerOS Virtualization 2.9.1 : nghttp2 (EulerOS-SA-2024-1045)	Nessus	Huawei Local Security Checks	high
188485	EulerOS Virtualization 2.10.0 : nghttp2 (EulerOS-SA-2023-3478)	Nessus	Huawei Local Security Checks	high
188417	EulerOS 2.0 SP10 : nghttp2 (EulerOS-SA-2023-3189)	Nessus	Huawei Local Security Checks	high
188341	EulerOS Virtualization 2.11.1 : nghttp2 (EulerOS-SA-2023-3363)	Nessus	Huawei Local Security Checks	high
188322	EulerOS 2.0 SP11 : nghttp2 (EulerOS-SA-2023-3038)	Nessus	Huawei Local Security Checks	high
188269	EulerOS 2.0 SP11 : nghttp2 (EulerOS-SA-2023-3015)	Nessus	Huawei Local Security Checks	high
188148	EulerOS 2.0 SP10 : nghttp2 (EulerOS-SA-2023-3224)	Nessus	Huawei Local Security Checks	high
188147	EulerOS Virtualization 2.10.1 : nghttp2 (EulerOS-SA-2023-3506)	Nessus	Huawei Local Security Checks	high
183280	SUSE SLES15 Security Update : nghttp2 (SUSE-SU-2023:4102-1)	Nessus	SuSE Local Security Checks	high
182743	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : nghttp2 (SUSE-SU-2023:3997-1)	Nessus	SuSE Local Security Checks	high
182096	SUSE SLES12 Security Update : nghttp2 (SUSE-SU-2023:3842-1)	Nessus	SuSE Local Security Checks	high
180563	Amazon Linux 2 : ecs-service-connect-agent (ALASECS-2023-006)	Nessus	Amazon Linux Local Security Checks	critical
180126	Amazon Linux 2023 : ecs-service-connect-agent (ALAS2023-2023-300)	Nessus	Amazon Linux Local Security Checks	critical
179802	Amazon Linux AMI : nghttp2 (ALAS-2023-1793)	Nessus	Amazon Linux Local Security Checks	high
179791	Amazon Linux 2023 : libnghttp2, libnghttp2-devel, nghttp2 (ALAS2023-2023-278)	Nessus	Amazon Linux Local Security Checks	high
179772	Amazon Linux 2 : nghttp2 (ALAS-2023-2180)	Nessus	Amazon Linux Local Security Checks	high
179757	Amazon Linux 2023 : nodejs, nodejs-devel, nodejs-full-i18n (ALAS2023-2023-290)	Nessus	Amazon Linux Local Security Checks	high
179361	CBL Mariner 2.0 Security Update: nghttp2 (CVE-2023-35945)	Nessus	MarinerOS Local Security Checks	high

Detections

Analytics

CVE-2023-35945

high

Tenable Plugins

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critical

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critical

critical

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