SARA / Free Tools / CVE / CVE-2023-0026

CVE-2023-0026 — An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd)

An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When a BGP update message is received over an established BGP se

CVSS
7.5 HIGH
EPSS
0.11% (top 71.10%)
CWE
CWE-20
Published
2023-06-21T00:00:00.000Z
Last modified
2024-12-06T19:18:31.348Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

01What is this vulnerability?

An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When a BGP update message is received over an established BGP session, and that message contains a specific, optional transitive attribute, this session will be torn down with an…

02Affected products

VendorProductVersions
Juniper NetworksJunos OSunspecified, unspecified, 21.1, 21.2, 21.3, 21.4, 22.1, 22.2, 22.3, 22.4, 23.1
Juniper NetworksJunos OS Evolvedunspecified, 21.1R1-EVO, 21.2, 21.3, 21.4, 22.1, 22.2, 22.3, 22.4, 23.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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