CVE-2023-44186 — Improper Handling of Exceptional Conditions in Networks Junos OS

CWE-755 — Improper Handling of Exceptional Conditions4 documents4 sources

Severity

7.5HIGHNVD

EPSS

0.2%

top 63.78%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

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

Timeline

PublishedOct 11

Description

An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition. This issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbo…

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_evolved21.1 — 21.1*-EVO+8

▶CVEListV5juniper_networks/junos_os21.1R1 — 21.1*+8

▶NVDjuniper/junos_os_evolved< 20.4+10

▶NVDjuniper/junos< 20.4+11

🔴Vulnerability Details

GHSA

GHSA-8pvv-px4f-4px7: An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacke↗2023-10-11

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CVEList

Junos OS and Junos OS Evolved: RPD crash when attempting to send a very long AS PATH to a non-4-byte-AS capable BGP neighbor↗2023-10-11

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📋Vendor Advisories

Juniper

CVE-2023-44186: An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attack↗2023-10-11

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