Juniper Junos OS Denial of Service Vulnerability

Impact

• Denial of Service

System / Technologies affected

Juniper Networks Junos EX series, QFX Series, MX Series, and SRX branch series

• 14.1X53 versions prior to 14.1X53-D54
• 15.1X49 versions prior to 15.1X49-D240
• 15.1X53 versions prior to 15.1X53-D593
• 16.1 versions prior to 16.1R7-S8
• 17.2 versions prior to 17.2R3-S4
• 17.3 versions prior to 17.3R3-S8
• 17.4 versions prior to 17.4R2-S11, 17.4R3-S2
• 18.1 versions prior to 18.1R3-S10
• 18.2 versions prior to 18.2R2-S7, 18.2R3-S3
• 18.3 versions prior to 18.3R2-S4, 18.3R3-S2
• 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2
• 19.1 versions prior to 19.1R1-S5, 19.1R2-S2, 19.1R3
• 19.2 versions prior to 19.2R1-S5, 19.2R2
• 19.3 versions prior to 19.3R2-S3, 19.3R3
• 19.4 versions prior to 19.4R1-S2, 19.4R2

Junos OS versions 12.3, 15.1 are unaffected by this vulnerability.

Solutions

Before installation of the software, please visit the vendor web-site for more details.

• Apply fixes issued by the vendor. For detail, please refer to the link below:
  https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11105

Vulnerability Identifier

• CVE-2021-0215

Source

• Juniper Network
• AusCERT

Related Link

• https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11105
• http://www.auscert.org.au/bulletins/ESB-2021.0762