{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-21616", "ASSIGNER": "sirt@juniper.net", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "\nAn 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).\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> show security nat resource-usage source-pool \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% <<<<<\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" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-1286: Improper Validation of Syntactic Correctness of Input", "cweId": "CWE-1286" } ] }, { "description": [ { "lang": "eng", "value": "Denial of Service (DoS)" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Juniper Networks", "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "version_affected": "<", "version_name": "0", "version_value": "21.2R3-S6" }, { "version_affected": "<", "version_name": "21.3", "version_value": "21.3R3-S5" }, { "version_affected": "<", "version_name": "21.4", "version_value": "21.4R3-S5" }, { "version_affected": "<", "version_name": "22.1", "version_value": "22.1R3-S4" }, { "version_affected": "<", "version_name": "22.2", "version_value": "22.2R3-S3" }, { "version_affected": "<", "version_name": "22.3", "version_value": "22.3R3-S1" }, { "version_affected": "<", "version_name": "22.4", "version_value": "22.4R2-S2, 22.4R3" }, { "version_affected": "<", "version_name": "23.2", "version_value": "23.2R1-S1, 23.2R2" } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://supportportal.juniper.net/JSA75757", "refsource": "MISC", "name": "https://supportportal.juniper.net/JSA75757" }, { "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "refsource": "MISC", "name": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" } ] }, "generator": { "engine": "Vulnogram 0.1.0-av217" }, "source": { "advisory": "JSA75757", "defect": [ "1702811" ], "discovery": "USER" }, "configuration": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.

Please verify on SRX with:

user@host> show security alg status | match sip
SIP : Enabled

Please verify on MX whether the following is configured:

user@host> show security alg status | match sip
SIP : Enabled
[services ... rule <rule-name> (term <term-name> ) from/match application/application-set <name>]

where either

a. name = junos-sip

or an application or application-set refers to SIP:

b. [applications application <name> application-protocol sip]

or

c. [applications application-set <name> application junos-sip]
" } ], "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> show security alg status | match sip\n SIP : Enabled\nPlease verify on MX whether the following is configured:\n\n user@host> show security alg status | match sip\n SIP : Enabled\n [services ... rule (term ) from/match application/application-set ]\nwhere either\n\n a. name = junos-sip\nor an application or application-set refers to SIP:\n\n b. [applications application application-protocol sip]\nor\n\n c. [applications application-set application junos-sip]\n" } ], "work_around": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.

" } ], "value": "There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.\n\n" } ], "exploit": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

" } ], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n" } ], "solution": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.

" } ], "value": "The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.\n\n" } ], "impact": { "cvss": [ { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" } ] } }