CVE-2024-21616 (GCVE-0-2024-21616)
Vulnerability from cvelistv5
Published
2024-01-12 00:56
Modified
2025-06-17 14:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1286 - Improper Validation of Syntactic Correctness of Input
- Denial of Service (DoS)
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).
On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.
NAT IP usage can be monitored by running the following command.
user@srx> show security nat resource-usage source-pool <source_pool_name>
Pool name: source_pool_name
..
Address Factor-index Port-range Used Avail Total Usage
X.X.X.X
0 Single Ports 50258 52342 62464 96% <<<<<
- Alg Ports 0 2048 2048 0%
This issue affects:
Juniper Networks Junos OS on MX Series and SRX Series
* All versions earlier than 21.2R3-S6;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S5;
* 22.1 versions earlier than 22.1R3-S4;
* 22.2 versions earlier than 22.2R3-S3;
* 22.3 versions earlier than 22.3R3-S1;
* 22.4 versions earlier than 22.4R2-S2, 22.4R3;
* 23.2 versions earlier than 23.2R1-S1, 23.2R2.
References
| ► | URL | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 21.3 ≤ Version: 21.4 ≤ Version: 22.1 ≤ Version: 22.2 ≤ Version: 22.3 ≤ Version: 22.4 ≤ Version: 23.2 ≤ |
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Service (DoS).\\n\\nOn all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.\\n\\nNAT IP usage can be monitored by running the following command.\\n\\nuser@srx\u003e show security nat resource-usage source-pool \u003csource_pool_name\u003e\\n\\n\\nPool name: source_pool_name\\n..\\nAddress Factor-index Port-range Used Avail Total Usage\\nX.X.X.X\\n0 Single Ports 50258 52342 62464 96% \u003c\u003c\u003c\u003c\u003c\\n- Alg Ports 0 2048 2048 0%\\nThis issue affects:\\n\\nJuniper Networks Junos OS on MX Series and SRX Series\\n\\n\\n\\n * All versions earlier than 21.2R3-S6;\\n * 21.3 versions earlier than 21.3R3-S5;\\n * 21.4 versions earlier than 21.4R3-S5;\\n * 22.1 versions earlier than 22.1R3-S4;\\n * 22.2 versions earlier than 22.2R3-S3;\\n * 22.3 versions earlier than 22.3R3-S1;\\n * 22.4 versions earlier than 22.4R2-S2, 22.4R3;\\n * 23.2 versions earlier than 23.2R1-S1, 23.2R2.\\n\\n\\n\\n\\n\\n\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\\n\\n\u003cp\u003eAn Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).\u003c/p\u003e\u003cp\u003eOn all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.\u003c/p\u003e\u003cp\u003eNAT IP usage can be monitored by running the following command.\u003c/p\u003e\u003ccode\u003euser@srx\u0026gt; show security nat resource-usage source-pool \u0026lt;source_pool_name\u0026gt;\u003c/code\u003e\u003cbr\u003e\u003cp\u003e\u003c/p\u003e\u003ccode\u003ePool name: source_pool_name\u003c/code\u003e\u003cbr\u003e\u003ccode\u003e..\u003c/code\u003e\u003cbr\u003e\u003ccode\u003eAddress Factor-index Port-range Used Avail Total Usage\u003c/code\u003e\u003cbr\u003e\u003ccode\u003eX.X.X.X\u003c/code\u003e\u003cbr\u003e\u003ccode\u003e0 Single Ports 50258 52342 62464 96% \u0026lt;\u0026lt;\u0026lt;\u0026lt;\u0026lt;\u003c/code\u003e\u003cbr\u003e\u003ccode\u003e- Alg Ports 0 2048 2048 0%\u003c/code\u003e\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJuniper Networks Junos OS on MX Series and SRX Series\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions earlier than 21.2R3-S6;\u003c/li\u003e\u003cli\u003e21.3 versions earlier than 21.3R3-S5;\u003c/li\u003e\u003cli\u003e21.4 versions earlier than 21.4R3-S5;\u003c/li\u003e\u003cli\u003e22.1 versions earlier than 22.1R3-S4;\u003c/li\u003e\u003cli\u003e22.2 versions earlier than 22.2R3-S3;\u003c/li\u003e\u003cli\u003e22.3 versions earlier than 22.3R3-S1;\u003c/li\u003e\u003cli\u003e22.4 versions earlier than 22.4R2-S2, 22.4R3;\u003c/li\u003e\u003cli\u003e23.2 versions earlier than 23.2R1-S1, 23.2R2.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\\n\\n\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1286\", \"description\": \"CWE-1286: Improper Validation of Syntactic Correctness of Input\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"description\": \"Denial of Service (DoS)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.\\n\\nPlease verify on SRX with:\\n\\n user@host\u003e show security alg status | match sip\\n SIP : Enabled\\nPlease verify on MX whether the following is configured:\\n\\n user@host\u003e show security alg status | match sip\\n SIP : Enabled\\n [services ... rule \u003crule-name\u003e (term \u003cterm-name\u003e ) from/match application/application-set \u003cname\u003e]\\nwhere either\\n\\n a. name = junos-sip\\nor an application or application-set refers to SIP:\\n\\n b. [applications application \u003cname\u003e application-protocol sip]\\nor\\n\\n c. [applications application-set \u003cname\u003e application junos-sip]\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eTo be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.\u003c/p\u003e\u003cp\u003ePlease verify on SRX with:\u003c/p\u003e\u003ccode\u003e user@host\u0026gt; show security alg status | match sip\u003c/code\u003e\u003cbr/\u003e\u003ccode\u003e SIP : Enabled\u003c/code\u003e\u003cbr/\u003e\u003cp\u003ePlease verify on MX whether the following is configured:\u003c/p\u003e\u003ccode\u003e user@host\u0026gt; show security alg status | match sip\u003c/code\u003e\u003cbr/\u003e\u003ccode\u003e SIP : Enabled\u003c/code\u003e\u003cbr/\u003e\u003ccode\u003e [services ... rule \u0026lt;rule-name\u0026gt; (term \u0026lt;term-name\u0026gt; ) from/match application/application-set \u0026lt;name\u0026gt;]\u003c/code\u003e\u003cbr/\u003e\u003cp\u003ewhere either\u003c/p\u003e\u003ccode\u003e a. name = junos-sip\u003c/code\u003e\u003cbr/\u003e\u003cp\u003eor an application or application-set refers to SIP:\u003c/p\u003e\u003ccode\u003e b. [applications application \u0026lt;name\u0026gt; application-protocol sip]\u003c/code\u003e\u003cbr/\u003e\u003cp\u003eor\u003c/p\u003e\u003ccode\u003e c. [applications application-set \u0026lt;name\u0026gt; application junos-sip]\u003c/code\u003e\u003cbr/\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2024-01-12T00:56:20.566Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-21616\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-06-17T14:43:11.964Z\", \"dateReserved\": \"2023-12-27T19:38:25.710Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2024-01-12T00:56:20.566Z\", \"assignerShortName\": \"juniper\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.
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