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CVE-2021-0227

Junos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 17.3R3-S9, 18.2R3-S5, 19.1R3-S2, 19.3R3
None on Exploit-DB, Metasploit or GitHub

Summary

An improper restriction of operations within the bounds of a memory buffer vulnerability in Juniper Networks Junos OS J-Web on SRX Series devices allows an attacker to cause Denial of Service (DoS) by sending certain crafted HTTP packets. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. When this issue occurs, web-management, NTP daemon (ntpd) and Layer 2 Control Protocol process (L2CPD) daemons might crash. This issue affects Juniper Networks Junos OS on SRX Series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2;

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Juniper Networks Junos OS

    From 17.3 · fixed in 17.3R3-S9; From 18.2 · fixed in 18.2R3-S5; From 19.1 · fixed in 19.1R3-S2; From 19.3 · fixed in 19.3R3

References 1

kb.juniper.net