CVE-2021-31362 — Protection Mechanism Failure in Networks Junos OS

CWE-693 — Protection Mechanism Failure4 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 75.54%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Juniper Networks Junos OSJuniper Networks Junos OS EvolvedJuniper Junos+1 more
Timeline
PublishedOct 19
Latest updateMay 24

Description

A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause established IS-IS adjacencies to go down by sending a spoofed hello PDU leading to a Denial of Service (DoS) condition. Continued receipted of these spoofed PDUs will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.2R3-S8; 18.3 versions prior…

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages4 packages

▶CVEListV5juniper_networks/junos_os_evolvedunspecified — 20.4R2-EVO+1
▶CVEListV5juniper_networks/junos_osunspecified — 18.2R3-S8+10
▶NVDjuniper/junos18.1+11

🔴Vulnerability Details

2
GHSA
GHSA-58j2-8mpm-8hc4: A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent una↗2022-05-24
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CVEList
Junos OS and Junos OS Evolved: An IS-IS adjacency might be taken down if a bad hello PDU is received for an existing adjacency causing a DoS↗2021-10-19
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📋Vendor Advisories

1
Juniper
CVE-2021-31362: A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent una↗2021-10-19
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CVE-2021-31362 — Protection Mechanism Failure | cvebase