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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.0145 JSA11261 - 2022-01 Security Bulletin: SRX Series and MX Series with SPC3: A high percentage of fragments might lead to high latency or packet drops (CVE-2022-22153) 13 January 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Junos OS Publisher: Juniper Networks Operating System: Juniper Impact/Access: Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2022-22153 Original Bulletin: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11261 - --------------------------BEGIN INCLUDED TEXT-------------------- 2022-01 Security Bulletin: SRX Series and MX Series with SPC3: A high percentage of fragments might lead to high latency or packet drops (CVE-2022-22153) Article ID : JSA11261 Last Updated: 12 Jan 2022 Version : 1.0 Product Affected: This issue affects all versions of Junos OS. Affected platforms: MX Series with SPC3, SRX Series. Problem: An Insufficient Algorithmic Complexity combined with an Allocation of Resources Without Limits or Throttling vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 allows an unauthenticated network attacker to cause latency in transit packet processing and even packet loss. If transit traffic includes a significant percentage (> 5%) of fragmented packets which need to be reassembled, high latency or packet drops might be observed. This issue affects Juniper Networks Junos OS on SRX Series, MX Series with SPC3: o All versions prior to 18.2R3; o 18.3 versions prior to 18.3R3; o 18.4 versions prior to 18.4R2-S9, 18.4R3; o 19.1 versions prior to 19.1R2; o 19.2 versions prior to 19.2R1-S1, 19.2R2. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was seen during production usage. This issue has been assigned CVE-2022-22153 . Solution: The following software releases have been updated to resolve this specific issue: 18.2R3, 18.3R3, 18.4R2-S9, 18.4R3, 19.1R2, 19.2R1-S1, 19.2R2, 19.3R1, and all subsequent releases. This issue is being tracked as 1406465 . Workaround: There are no viable workarounds for this issue. Implementation: Software releases or updates are available for download at https:// support.juniper.net/support/downloads/ Modification History: 2022-01-12: Initial Publication. CVSS Score: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) Severity Level: High Severity Assessment: Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories." - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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