Common Weakness Enumeration
CWE-420
AllowedUnprotected Alternate Channel
Abstraction: Base · Status: Draft
The product protects a primary channel, but it does not use the same level of protection for an alternate channel.
71 vulnerabilities reference this CWE, most recent first.
CVE-2023-7266 (GCVE-0-2023-7266)
Vulnerability from cvelistv5 – Published: 2024-12-28 07:00 – Updated: 2024-12-28 16:18
VLAI
EPSS
VEX
Summary
Some Huawei home routers have a connection hijacking vulnerability. Successful exploitation of this vulnerability may cause DoS or information leakage.(Vulnerability ID:HWPSIRT-2023-76605)
This vulnerability has been assigned a (CVE)ID:CVE-2023-7266
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
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CVE-2023-4570 (GCVE-0-2023-4570)
Vulnerability from cvelistv5 – Published: 2023-10-05 15:26 – Updated: 2024-09-19 18:53
VLAI
EPSS
VEX
Title
Improper Restriction in NI MeasurementLink Python Services
Summary
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Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NI | MeasurementLink |
Affected:
1.0.0 , ≤ 1.1.0
(1.1.1)
|
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CVE-2023-0317 (GCVE-0-2023-0317)
Vulnerability from cvelistv5 – Published: 2023-04-19 11:57 – Updated: 2025-02-05 15:03
VLAI
EPSS
VEX
Title
GateManager debug interface is included in non-debug builds
Summary
Unprotected Alternate Channel vulnerability in debug console of GateManager allows system administrator to obtain sensitive information.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Secomea | GateManager |
Affected:
10.0 , < 10.1
(custom)
|
Date Public
2023-04-19 11:57
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CVE-2022-28693 (GCVE-0-2022-28693)
Vulnerability from cvelistv5 – Published: 2025-02-14 20:50 – Updated: 2025-02-14 20:55
VLAI
EPSS
VEX
Summary
Unprotected alternative channel of return branch target prediction in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Information Disclosure
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Processors |
Affected:
See references
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CVE-2022-25786 (GCVE-0-2022-25786)
Vulnerability from cvelistv5 – Published: 2022-05-04 17:17 – Updated: 2024-08-03 04:49
VLAI
EPSS
VEX
Title
GateManager debug interface is included in production builds
Summary
Unprotected Alternate Channel vulnerability in debug console of GateManager allows system administrator to obtain sensitive information. This issue affects: GateManager all versions prior to 9.7.
Severity
4.9 (Medium)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.secomea.com/support/cybersecurity-advisory/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Secomea | GateManager |
Affected:
all , < 9.7
(custom)
|
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CVE-2020-8558 (GCVE-0-2020-8558)
Vulnerability from cvelistv5 – Published: 2020-07-27 19:55 – Updated: 2024-09-16 22:40
VLAI
EPSS
VEX
Title
Kubernetes node setting allows for neighboring hosts to bypass localhost boundary
Summary
The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node's network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.
Severity
5.4 (Medium)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
3 references
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|---|---|
| https://github.com/kubernetes/kubernetes/issues/92315 | x_refsource_CONFIRM |
| https://groups.google.com/g/kubernetes-announce/c… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2020082… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes |
Affected:
prior to 1.18.4
Affected: prior to 1.17.7 Affected: prior to 1.16.11 Affected: 1.15 Affected: 1.14 Affected: 1.13 Affected: 1.12 Affected: 1.11 Affected: 1.10 Affected: 1.9 Affected: 1.8 Affected: 1.7 Affected: 1.6 Affected: 1.5 Affected: 1.4 Affected: 1.3 Affected: 1.2 Affected: 1.1 |
Date Public
2020-04-18 00:00
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GHSA-232P-VWFF-86MP
Vulnerability from github – Published: 2023-04-04 21:13 – Updated: 2023-04-05 23:16
VLAI
Summary
Docker Swarm encrypted overlay network may be unauthenticated
Details
Moby is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream projects/products. The Moby daemon component (dockerd), which is developed as moby/moby is commonly referred to as Docker.
Swarm Mode, which is compiled in and delivered by default in dockerd and is thus present in most major Moby downstreams, is a simple, built-in container orchestrator that is implemented through a combination of SwarmKit and supporting network code.
The overlay network driver is a core feature of Swarm Mode, providing isolated virtual LANs that allow communication between containers and services across the cluster. This driver is an implementation/user of VXLAN, which encapsulates link-layer (Ethernet) frames in UDP datagrams that tag the frame with a VXLAN Network ID (VNI) that identifies the originating overlay network. In addition, the overlay network driver supports an optional, off-by-default encrypted mode, which is especially useful when VXLAN packets traverses an untrusted network between nodes.
Encrypted overlay networks function by encapsulating the VXLAN datagrams through the use of the IPsec Encapsulating Security Payload protocol in Transport mode. By deploying IPSec encapsulation, encrypted overlay networks gain the additional properties of source authentication through cryptographic proof, data integrity through check-summing, and confidentiality through encryption.
When setting an endpoint up on an encrypted overlay network, Moby installs three iptables (Linux kernel firewall) rules that enforce both incoming and outgoing IPSec. These rules rely on the u32 iptables extension provided by the xt_u32 kernel module to directly filter on a VXLAN packet's VNI field, so that IPSec guarantees can be enforced on encrypted overlay networks without interfering with other overlay networks or other users of VXLAN.
Two iptables rules serve to filter incoming VXLAN datagrams with a VNI that corresponds to an encrypted network and discards unencrypted datagrams. The rules are appended to the end of the INPUT filter chain, following any rules that have been previously set by the system administrator. Administrator-set rules take precedence over the rules Moby sets to discard unencrypted VXLAN datagrams, which can potentially admit unencrypted datagrams that should have been discarded.
On Red Hat Enterprise Linux and derivatives such as CentOS and Rocky, the xt_u32 module has been:
* moved to the kernel-modules-extra package and no longer installed by default in RHEL 8.3
* officially deprecated in RHEL 8.6
* removed completely in RHEL 9
These rules are not created when xt_u32 is unavailable, even though the container is still attached to the network.
Impact
Encrypted overlay networks on affected configurations silently accept cleartext VXLAN datagrams that are tagged with the VNI of an encrypted overlay network. As a result, it is possible to inject arbitrary Ethernet frames into the encrypted overlay network by encapsulating them in VXLAN datagrams.
The injection of arbitrary Ethernet frames can enable a Denial of Service attack. A sophisticated attacker may be able to establish a UDP or TCP connection by way of the container’s outbound gateway that would otherwise be blocked by a stateful firewall, or carry out other escalations beyond simple injection by smuggling packets into the overlay network.
Patches
Patches are available in Moby releases 23.0.3, and 20.10.24. As Mirantis Container Runtime's 20.10 releases are numbered differently, users of that platform should update to 20.10.16.
Workarounds
- Close the VXLAN port (by default, UDP port 4789) to incoming traffic at the Internet boundary (see GHSA-vwm3-crmr-xfxw) to prevent all VXLAN packet injection.
- Ensure that the
xt_u32kernel module is available on all nodes of the Swarm cluster.
Background
- #43382 partially discussed this concern, but did not consider the security implications.
- Mirantis FIELD-5788 essentially duplicates #43382, and was created six months earlier; it similarly overlooked the security implications.
- #45118 is the ancestor of the final patches, and was where the security implications were discovered.
Related
- CVE-2023-28841: Encrypted overlay network traffic may be unencrypted
- CVE-2023-28842: Encrypted overlay network with a single endpoint is unauthenticated
- GHSA-vwm3-crmr-xfxw: The Swarm VXLAN port may be exposed to attack due to ambiguous documentation
- GHSA-gvm4-2qqg-m333: Security issues in encrypted overlay networks (libnetwork)
Severity
7.5 (High)
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"details": "[Moby](https://mobyproject.org/) is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream projects/products. The Moby daemon component (`dockerd`), which is developed as [moby/moby](https://github.com/moby/moby) is commonly referred to as *Docker*.\n\nSwarm Mode, which is compiled in and delivered by default in `dockerd` and is thus present in most major Moby downstreams, is a simple, built-in container orchestrator that is implemented through a combination of [SwarmKit](https://github.com/moby/swarmkit) and supporting network code.\n\nThe `overlay` network driver is a core feature of Swarm Mode, providing isolated virtual LANs that allow communication between containers and services across the cluster. This driver is an implementation/user of [VXLAN](https://en.wikipedia.org/wiki/Virtual_Extensible_LAN), which encapsulates link-layer (Ethernet) frames in UDP datagrams that tag the frame with a VXLAN Network ID (VNI) that identifies the originating overlay network. In addition, the overlay network driver supports an optional, off-by-default encrypted mode, which is especially useful when VXLAN packets traverses an untrusted network between nodes.\n\nEncrypted overlay networks function by encapsulating the VXLAN datagrams through the use of the [IPsec Encapsulating Security Payload](https://en.wikipedia.org/wiki/IPsec#Encapsulating_Security_Payload) protocol in [Transport mode](https://en.wikipedia.org/wiki/IPsec#Transport_mode). By deploying IPSec encapsulation, encrypted overlay networks gain the additional properties of source authentication through cryptographic proof, data integrity through check-summing, and confidentiality through encryption.\n\nWhen setting an endpoint up on an encrypted overlay network, Moby installs three [iptables](https://www.netfilter.org/projects/iptables/index.html) (Linux kernel firewall) rules that enforce both incoming and outgoing IPSec. These rules rely on the `u32` iptables extension provided by the `xt_u32` kernel module to directly filter on a VXLAN packet\u0027s VNI field, so that IPSec guarantees can be enforced on encrypted overlay networks without interfering with other overlay networks or other users of VXLAN.\n\n[Two iptables rules](https://github.com/moby/libnetwork/blob/d9fae4c73daf76c3b0f77e14b45b8bf612ba764d/drivers/overlay/encryption.go#L230-L234) serve to filter incoming VXLAN datagrams with a VNI that corresponds to an encrypted network and discards unencrypted datagrams. The rules are appended to the end of the `INPUT` filter chain, following any rules that have been previously set by the system administrator. Administrator-set rules take precedence over the rules Moby sets to discard unencrypted VXLAN datagrams, which can potentially admit unencrypted datagrams that should have been discarded.\n\nOn Red Hat Enterprise Linux and derivatives such as CentOS and Rocky, the `xt_u32` module has been:\n* [moved to the kernel-modules-extra package and no longer installed by default in RHEL 8.3](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/rhel-8-3-0-release#technology-preview_networking)\n* [officially deprecated in RHEL 8.6](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.6_release_notes/deprecated_functionality#deprecated-functionality_networking)\n* [removed completely in RHEL 9](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/considerations_in_adopting_rhel_9/assembly_networking_considerations-in-adopting-rhel-9#ref_firewall-networking_assembly_networking)\n\nThese rules are not created when `xt_u32` is unavailable, even though the container is still attached to the network.\n\n## Impact\nEncrypted overlay networks on affected configurations silently accept cleartext VXLAN datagrams that are tagged with the VNI of an encrypted overlay network. As a result, it is possible to inject arbitrary Ethernet frames into the encrypted overlay network by encapsulating them in VXLAN datagrams.\n\nThe injection of arbitrary Ethernet frames can enable a Denial of Service attack. A sophisticated attacker may be able to establish a UDP or TCP connection by way of the container\u2019s outbound gateway that would otherwise be blocked by a stateful firewall, or carry out other escalations beyond simple injection by smuggling packets into the overlay network.\n\n## Patches\nPatches are available in Moby releases 23.0.3, and 20.10.24. As Mirantis Container Runtime\u0027s 20.10 releases are numbered differently, users of that platform should update to 20.10.16.\n\n## Workarounds\n* Close the VXLAN port (by default, UDP port 4789) to incoming traffic at the Internet boundary (see [GHSA-vwm3-crmr-xfxw](https://github.com/moby/moby/security/advisories/GHSA-vwm3-crmr-xfxw)) to prevent all VXLAN packet injection.\n* Ensure that the `xt_u32` kernel module is available on all nodes of the Swarm cluster.\n\n## Background\n* [#43382](https://github.com/moby/moby/issues/43382) partially discussed this concern, but did not consider the security implications.\n* Mirantis FIELD-5788 essentially duplicates [#43382](https://github.com/moby/moby/issues/43382), and was created six months earlier; it similarly overlooked the security implications.\n* [#45118](https://github.com/moby/moby/pull/45118) is the ancestor of the final patches, and was where the security implications were discovered.\n\n## Related\n* [CVE-2023-28841: Encrypted overlay network traffic may be unencrypted](https://github.com/moby/moby/security/advisories/GHSA-33pg-m6jh-5237)\n* [CVE-2023-28842: Encrypted overlay network with a single endpoint is unauthenticated](https://github.com/moby/moby/security/advisories/GHSA-6wrf-mxfj-pf5p)\n* [GHSA-vwm3-crmr-xfxw: The Swarm VXLAN port may be exposed to attack due to ambiguous documentation](https://github.com/moby/moby/security/advisories/GHSA-vwm3-crmr-xfxw)\n* [GHSA-gvm4-2qqg-m333: Security issues in encrypted overlay networks](https://github.com/moby/libnetwork/security/advisories/GHSA-gvm4-2qqg-m333) (libnetwork)",
"id": "GHSA-232p-vwff-86mp",
"modified": "2023-04-05T23:16:22Z",
"published": "2023-04-04T21:13:06Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/moby/libnetwork/security/advisories/GHSA-gvm4-2qqg-m333"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-232p-vwff-86mp"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-33pg-m6jh-5237"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-6wrf-mxfj-pf5p"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-vwm3-crmr-xfxw"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28840"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/issues/43382"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/pull/45118"
},
{
"type": "PACKAGE",
"url": "https://github.com/moby/moby"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Docker Swarm encrypted overlay network may be unauthenticated"
}
GHSA-2HC9-CC65-XWJ8
Vulnerability from github – Published: 2026-01-05 18:30 – Updated: 2026-06-22 19:58
VLAI
Summary
Duplicate Advisory: ComfyUI-Manager has an Unprotected Alternate Channel (CWE-420)
Details
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-95pq-hr8p-f5g7. This link is maintained to preserve external references.
Original Description
An issue in ComfyUI-Manager prior to version 3.38 allowed remote attackers to potentially manipulate its configuration and critical data. This was due to the application storing its files in an insufficiently protected location that was accessible via the web interface
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "comfyui-manager"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.38"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-420"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-22T19:58:15Z",
"nvd_published_at": "2026-01-05T16:15:42Z",
"severity": "HIGH"
},
"details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-95pq-hr8p-f5g7. This link is maintained to preserve external references.\n\n### Original Description\nAn issue in ComfyUI-Manager prior to version 3.38 allowed remote attackers to potentially manipulate its configuration and critical data. This was due to the application storing its files in an insufficiently protected location that was accessible via the web interface",
"id": "GHSA-2hc9-cc65-xwj8",
"modified": "2026-06-22T19:58:15Z",
"published": "2026-01-05T18:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-67303"
},
{
"type": "WEB",
"url": "https://github.com/Comfy-Org/ComfyUI-Manager/pull/2338/commits/e44c5cef58fb4973670b86433b9d24d077b44a26"
},
{
"type": "WEB",
"url": "https://github.com/Comfy-Org/ComfyUI-Manager/blob/main/docs/en/v3.38-userdata-security-migration.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Duplicate Advisory: ComfyUI-Manager has an Unprotected Alternate Channel (CWE-420)",
"withdrawn": "2026-06-22T19:58:15Z"
}
GHSA-33FG-F8WX-CHW2
Vulnerability from github – Published: 2024-12-28 09:31 – Updated: 2024-12-28 09:31
VLAI
Details
Some Huawei home routers have a connection hijacking vulnerability. Successful exploitation of this vulnerability may cause DoS or information leakage.(Vulnerability ID:HWPSIRT-2023-76605) This vulnerability has been assigned a (CVE)ID:CVE-2023-7266
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2023-7266"
],
"database_specific": {
"cwe_ids": [
"CWE-420"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-28T07:15:19Z",
"severity": "HIGH"
},
"details": "Some Huawei home routers have a connection hijacking vulnerability. Successful exploitation of this vulnerability may cause DoS or information leakage.(Vulnerability ID:HWPSIRT-2023-76605)\nThis vulnerability has been assigned a (CVE)ID:CVE-2023-7266",
"id": "GHSA-33fg-f8wx-chw2",
"modified": "2024-12-28T09:31:28Z",
"published": "2024-12-28T09:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-7266"
},
{
"type": "WEB",
"url": "https://www.huawei.com/en/psirt/security-advisories/2024/huawei-sa-chvishhr-d616b19e-en"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-354G-72CF-FPQR
Vulnerability from github – Published: 2025-06-23 18:30 – Updated: 2025-06-23 18:30
VLAI
Details
ClickHouse 25.7.1.557 allows low-privileged users to execute shell commands by querying existing Executable() tables created by higher-privileged users. Although the CREATE TABLE privilege is restricted, there is no access control preventing low-privileged users from invoking Executable tables already present in the system. If an attacker can influence the contents of the script referenced by the Executable() engine through writable paths, they may execute controlled commands in the context of the ClickHouse server, leading to privilege escalation and unauthorized code execution. NOTE: the Supplier's position is that these types of executions by low-privileged users are the expected behavior.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-52969"
],
"database_specific": {
"cwe_ids": [
"CWE-420"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-23T17:15:31Z",
"severity": "LOW"
},
"details": "ClickHouse 25.7.1.557 allows low-privileged users to execute shell commands by querying existing Executable() tables created by higher-privileged users. Although the CREATE TABLE privilege is restricted, there is no access control preventing low-privileged users from invoking Executable tables already present in the system. If an attacker can influence the contents of the script referenced by the Executable() engine through writable paths, they may execute controlled commands in the context of the ClickHouse server, leading to privilege escalation and unauthorized code execution. NOTE: the Supplier\u0027s position is that these types of executions by low-privileged users are the expected behavior.",
"id": "GHSA-354g-72cf-fpqr",
"modified": "2025-06-23T18:30:26Z",
"published": "2025-06-23T18:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52969"
},
{
"type": "WEB",
"url": "https://github.com/skraft9/clickhouse-security-research"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Architecture and Design
Identify all alternate channels and use the same protection mechanisms that are used for the primary channels.
No CAPEC attack patterns related to this CWE.