{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-44186", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-44186", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2023-10-11T20:08:26.308Z", "updatedAt": "2024-12-03T14:49:41.755Z", "importedAt": "2026-10-24T01:56:58.683Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Junos OS and Junos OS Evolved: RPD crash when attempting to send a very long AS PATH to a non-4-byte-AS capable BGP neighbor", "summary": "\nAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\n\nThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\n\nNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\nThis issue affects:\n\nJuniper Networks Junos OS:\n\n\n\n * All versions prior to 20.4R3-S8;\n * 21.1 versions 21.1R1 and later;\n * 21.2 versions prior to 21.2R3-S6;\n * 21.3 versions prior to 21.3R3-S5;\n * 21.4 versions prior to 21.4R3-S5;\n * 22.1 versions prior to 22.1R3-S4;\n * 22.2 versions prior to 22.2R3-S2;\n * 22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\n * 22.4 versions prior to 22.4R2-S1, 22.4R3.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n * All versions prior to 20.4R3-S8-EVO;\n * 21.1 versions 21.1R1-EVO and later;\n * 21.2 versions prior to 21.2R3-S6-EVO;\n * 21.3 versions prior to 21.3R3-S5-EVO;\n * 21.4 versions prior to 21.4R3-S5-EVO;\n * 22.1 versions prior to 22.1R3-S4-EVO;\n * 22.2 versions prior to 22.2R3-S2-EVO;\n * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\n * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.\n\n\n\n\n\n\n", "affected": [ { "vendor": "Juniper Networks", "product": "Junos OS", "platforms": [ "MX Series", "PTX Series", "ACX Series", "EX Series", "QFX Series" ], "defaultStatus": "unaffected", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "20.4R3-S8" }, { "version": "21.1R1", "status": "affected", "versionType": "semver", "lessThan": "21.1*" }, { "version": "21.2", "status": "affected", "versionType": "semver", "lessThan": "21.2R3-S6" }, { "version": "21.3", "status": "affected", "versionType": "semver", "lessThan": "21.3R3-S5" }, { "version": "21.4", "status": "affected", "versionType": "semver", "lessThan": "21.4R3-S5" }, { "version": "22.1", "status": "affected", "versionType": "semver", "lessThan": "22.1R3-S4" }, { "version": "22.2", "status": "affected", "versionType": "semver", "lessThan": "22.2R3-S2" }, { "version": "22.3", "status": "affected", "versionType": "semver", "lessThan": "22.3R2-S2, 22.3R3-S1" }, { "version": "22.4", "status": "affected", "versionType": "semver", "lessThan": "22.4R2-S1, 22.4R3" } ] }, { "vendor": "Juniper Networks", "product": "Junos OS Evolved", "platforms": [ "PTX Series", "ACX Series", "QFX Series" ], "defaultStatus": "unaffected", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "20.4R3-S8-EVO" }, { "version": "21.1", "status": "affected", "versionType": "semver", "lessThan": "21.1*-EVO" }, { "version": "21.2", "status": "affected", "versionType": "semver", "lessThan": "21.2R3-S6-EVO" }, { "version": "21.3", "status": "affected", "versionType": "semver", "lessThan": "21.3R3-S5-EVO" }, { "version": "21.4", "status": "affected", "versionType": "semver", "lessThan": "21.4R3-S5-EVO" }, { "version": "22.1", "status": "affected", "versionType": "semver", "lessThan": "22.1R3-S4-EVO" }, { "version": "22.2", "status": "affected", "versionType": "semver", "lessThan": "22.2R3-S2-EVO" }, { "version": "22.3", "status": "affected", "versionType": "semver", "lessThan": "22.3R2-S2-EVO, 22.3R3-S1-EVO" }, { "version": "22.4", "status": "affected", "versionType": "semver", "lessThan": "22.4R2-S1-EVO, 22.4R3-EVO" } ] } ] } } }