CVE-2021-31353 — Improper Handling of Exceptional Conditions in Networks Junos OS

CWE-755 — Improper Handling of Exceptional Conditions4 documents4 sources

Severity

7.5HIGHNVD

EPSS

0.4%

top 38.61%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Juniper Networks Junos OS Juniper Networks Junos OS Evolved Juniper Junos OS Evolved +1 more

Timeline

PublishedOct 19

Latest updateMay 24

Description

An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific BGP update, causing the routing protocol daemon (RPD) to crash and restart, leading to a Denial of Service (DoS). Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and lat…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶CVEListV5juniper_networks/junos_os_evolvedunspecified — 20.4R2-S3-EVO, 20.4R3-EVO+2

▶CVEListV5juniper_networks/junos_os21.1 — 21.1R2+2

▶NVDjuniper/junos_os_evolved20.3+3

▶NVDjuniper/junos6 versions+5

🔴Vulnerability Details

GHSA

GHSA-jpg9-x2w5-xfrh: An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific↗2022-05-24

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CVEList

Junos OS and Junos OS Evolved: RPD core upon receipt of specific BGP update↗2021-10-19

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📋Vendor Advisories

Juniper

CVE-2021-31353: An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific↗2021-10-19

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