Input validation error in Junos OS Evolved and Juniper Junos OS - CVE-2021-0208

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in the Routing Protocol Daemon (RPD) service. A remote attacker can send specially crafted RSVP packets when bidirectional LSPs and perform a denial of service attack or execute arbitrary code on the system.

Remediation

Install updates from vendor's website.

This issue affects:

Juniper Networks Junos OS:

• All versions prior to 17.3R3-S10 except 15.1X49-D240 for SRX series;
• 17.4 versions prior to 17.4R3-S2;
• 18.1 versions prior to 18.1R3-S10;
• 18.2 versions prior to 18.2R2-S7, 18.2R3-S4;
• 18.3 versions prior to 18.3R3-S2;
• 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S2;
• 19.1 versions prior to 19.1R1-S5, 19.1R3-S3;
• 19.2 versions prior to 19.2R3;
• 19.3 versions prior to 19.3R2-S5, 19.3R3;
• 19.4 versions prior to 19.4R2-S2, 19.4R3-S1;
• 20.1 versions prior to 20.1R1-S4, 20.1R2;
• 15.1X49 versions prior to 15.1X49-D240 on SRX Series.

Juniper Networks Junos OS Evolved:

• 19.3 versions prior to 19.3R2-S5-EVO;
• 19.4 versions prior to 19.4R2-S2-EVO;
• 20.1 versions prior to 20.1R1-S4-EVO.

External links

• https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11098&cat=SIRT_1&actp=LIST