ghsa-8f5g-v4g5-c448
Vulnerability from github
An Improper Neutralization of Equivalent Special Elements vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows a unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
When MPLS packets are meant to be sent to a flexible tunnel interface (FTI) and if the FTI tunnel is down, these will hit the reject NH, due to which the packets get sent to the CPU and cause a host path wedge condition. This will cause the FPC to hang and requires a manual restart to recover.
Please note that this issue specifically affects PTX1000, PTX3000, PTX5000 with FPC3, PTX10002-60C, and PTX10008/16 with LC110x. Other PTX Series devices and Line Cards (LC) are not affected.
The following log message can be seen when the issue occurs:
Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID
- All versions earlier than 20.4R3-S8;
- 21.1 versions earlier than 21.1R3-S4;
- 21.2 versions earlier than 21.2R3-S6;
- 21.3 versions earlier than 21.3R3-S3;
- 21.4 versions earlier than 21.4R3-S5;
- 22.1 versions earlier than 22.1R2-S2, 22.1R3;
- 22.2 versions earlier than 22.2R2-S1, 22.2R3.
{
"affected": [],
"aliases": [
"CVE-2024-21600"
],
"database_specific": {
"cwe_ids": [
"CWE-76"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-12T01:15:47Z",
"severity": "MODERATE"
},
"details": "\nAn Improper Neutralization of Equivalent Special Elements vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows a unauthenticated, adjacent attacker to cause a Denial of Service (DoS).\n\nWhen MPLS packets are meant to be sent to a flexible tunnel interface (FTI) and if the FTI tunnel is down, these will hit the reject NH, due to which the packets get sent to the CPU and cause a host path wedge condition. This will cause the FPC to hang and requires a manual restart to recover.\n\nPlease note that this issue specifically affects PTX1000, PTX3000, PTX5000 with FPC3, PTX10002-60C, and PTX10008/16 with LC110x. Other PTX Series devices and Line Cards (LC) are not affected.\n\nThe following log message can be seen when the issue occurs:\n\nCmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID \u003cid\u003e (URI: /fpc/\u003cfpc\u003e/pfe/\u003cpfe\u003e/cm/\u003ccm\u003e/Host_Loopback/\u003ccm\u003e/HOST_LOOPBACK_MAKE_CMERROR_ID[\u003cid\u003e])\nThis issue affects Juniper Networks Junos OS:\n\n\n\n * All versions earlier than 20.4R3-S8;\n * 21.1 versions earlier than 21.1R3-S4;\n * 21.2 versions earlier than 21.2R3-S6;\n * 21.3 versions earlier than 21.3R3-S3;\n * 21.4 versions earlier than 21.4R3-S5;\n * 22.1 versions earlier than 22.1R2-S2, 22.1R3;\n * 22.2 versions earlier than 22.2R2-S1, 22.2R3.\n\n\n\n\n\n\n",
"id": "GHSA-8f5g-v4g5-c448",
"modified": "2024-01-12T03:30:48Z",
"published": "2024-01-12T03:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21600"
},
{
"type": "WEB",
"url": "https://supportportal.juniper.net/JSA75741"
},
{
"type": "WEB",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.