CVE-2023-44197 — An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Jun

An Out-of-Bounds Write 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).

01What is this vulnerability?

An Out-of-Bounds Write 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).

02Affected products

Vendor	Product	Versions
Juniper Networks	Junos OS	0, 21.1R1, 21.2, 21.3, 21.4
Juniper Networks	Junos OS Evolved	0, 21.1R1-EVO, 21.2-EVO, 21.3R1-EVO, 21.4-EVO

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

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

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

• Published: 2023-10-12T23:05:23.526Z
• Last modified: 2024-09-19T13:07:14.586Z

09References

• supportportal.juniper.net — https://supportportal.juniper.net/JSA73163