{ "CVE_data_meta": { "ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2023-01-11T17:00:00.000Z", "ID": "CVE-2023-22415", "STATE": "PUBLIC", "TITLE": "Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when specific H.323 packets are received" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "platform": "MX Series, SRX Series", "version_affected": "<", "version_value": "19.4R3-S10" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "20.2", "version_value": "20.2R3-S6" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "20.3", "version_value": "20.3R3-S6" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "20.4", "version_value": "20.4R3-S5" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "21.1", "version_value": "21.1R3-S4" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "21.2", "version_value": "21.2R3-S3" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "21.3", "version_value": "21.3R3-S3" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "21.4", "version_value": "21.4R3" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "22.1", "version_value": "22.1R2-S1, 22.1R3" }, { "platform": "MX Series, SRX Series", "version_affected": "<", "version_name": "22.2", "version_value": "22.2R1-S2, 22.2R2" } ] } } ] }, "vendor_name": "Juniper Networks" } ] } }, "configuration": [ { "lang": "eng", "value": "To be affected the H.323 ALG needs to be enabled, either implicitly / by default or by way of configuration. Please verify with:\n\nCheck if H.323 ALG is enabled by default with:\n user@host> show security alg status | match H323\n H323 : Enabled\n\nConfigure H.323 ALG to receive incoming calls with following commands.\n [set interfaces ge-0/0/0 unit 0 family inet address 10.1.1.1/24]\n [set interfaces ge-0/0/1 unit 0 family inet address 172.16.1.1/24]\n [set security zones security-zone private address-book address IP-Phone1 10.1.1.5/32] \n [set security zones security-zone private address-book address gatekeeper 10.1.1.25/32 ]\n [set security zones security-zone private interfaces ge-0/0/0.0 ]\n [set security zones security-zone public address-book address IP-Phone2 172.16.1.5/32 ]\n [set security zones security-zone public interfaces ge-0/0/1.0]\n [set security policies from-zone private to-zone public policy private-to-public match source-address IP-Phone1 ]\n [set security policies from-zone private to-zone public policy private-to-public match source-address gatekeeper ]\n [set security policies from-zone private to-zone public policy private-to-public match destination-address IP-Phone2 ]\n [set security policies from-zone private to-zone public policy private-to-public match application junos-h323 ]\n [set security policies from-zone private to-zone public policy private-to-public then permit ]\n [set security policies from-zone public to-zone private policy public-to-private match source-address IP-Phone2 ]\n [set security policies from-zone public to-zone private policy public-to-private match destination-address IP-Phone1 ]\n [set security policies from-zone public to-zone private policy public-to-private match destination-address gatekeeper]\n [set security policies from-zone public to-zone private policy public-to-private match application junos-h323 ]\n [set security policies from-zone public to-zone private policy public-to-private then permit ]\n" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "An Out-of-Bounds Write vulnerability in the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all MX Series and SRX Series platform, when H.323 ALG is enabled and specific H.323 packets are received simultaneously, a flow processing daemon (flowd) crash will occur. Continued receipt of these specific packets will cause a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on MX Series and SRX Series All versions prior to 19.4R3-S10; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2." } ] }, "exploit": [ { "lang": "eng", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "generator": { "engine": "Vulnogram 0.0.9" }, "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" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-787 Out-of-bounds Write" } ] }, { "description": [ { "lang": "eng", "value": "Denial of Service (DoS)" } ] } ] }, "references": { "reference_data": [ { "name": "https://kb.juniper.net/JSA70211", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA70211" } ] }, "solution": [ { "lang": "eng", "value": "The following software releases have been updated to resolve this specific issue: 19.4R3-S10, 20.2R3-S6, 20.3R3-S6, 20.4R3-S5, 21.1R3-S4, 21.2R3-S3, 21.3R3-S3, 21.4R3, 22.1R2-S1, 22.1R3, 22.2R1-S2, 22.2R2, 22.3R1, and all subsequent releases." } ], "source": { "advisory": "JSA70211", "defect": [ "1666996" ], "discovery": "USER" }, "work_around": [ { "lang": "eng", "value": "There are no known workarounds for this issue, but it should be considered to disable the H.323 ALG if it's not strictly needed." } ] }