#VU75092 Use-after-free in Junos OS Evolved and Juniper Junos OS - CVE-2023-28980

Vulnerability identifier: #VU75092

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-28980

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Junos OS Evolved
Operating systems & Components / Operating system
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in the routing protocol daemon when BGP rib sharding is used. A local user can run a specially crafted command to trigger a use-after-free error and crash the daemon.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4R1-EVO, 20.4R1-S1-EVO, 20.4R1-S2-EVO, 20.4R2-EVO, 20.4R2-S1-EVO, 20.4R2-S2-EVO, 20.4R2-S3-EVO, 20.4R3-EVO, 20.4R3-S1-EVO, 20.4R3-S2-EVO, 20.4R3-S3-EVO, 20.4R3-S4-EVO, 20.4R3-S5-EVO, 20.4, 21.2R1-EVO, 21.2R1-S1-EVO, 21.2R1-S2-EVO, 21.2R2-EVO, 21.2R2-S1-EVO, 21.2R2-S2-EVO, 21.2R3-EVO, 21.2R3-S1-EVO, 21.2R3-S2-EVO, 21.2R3-S3-EVO, 21.2-EVO, 21.3R1-EVO, 21.3R1-S1-EVO, 21.3R2-EVO, 21.3R2-S1-EVO, 21.3R2-S2-EVO, 21.3R3-EVO, 21.3-EVO, 21.4R1-EVO, 21.4R1-S1-EVO, 21.4R1-S2-EVO, 21.4R2-EVO, 22.1R1-EVO, 22.1R1-S1-EVO, 22.1R1-S2-EVO, 22.1-EVO, 22.2-EVO

Juniper Junos OS: 20.2R1-S1, 20.2R1-S2, 20.2R1-S3, 20.2R2-S1, 20.2R2-S2, 20.2R2-S3, 20.2R3-S1, 20.2R3-S2, 20.2R3-S3, 20.2R3-S4, 20.2R3-S5, 20.2, 20.2R1, 20.2R2, 20.2R3, 20.3R1-S1, 20.3R1-S2, 20.3R2-S1, 20.3R3-S1, 20.3R3-S2, 20.3R3-S3, 20.3R3-S4, 20.3, 20.3R1, 20.3R2, 20.3R3, 20.4R1-S1, 20.4R2-S1, 20.4R2-S2, 20.4R3-S1, 20.4R3-S2, 20.4R3-S3, 20.4, 20.4R1, 20.4R2, 20.4R3, 21.1R1-S1, 21.1R2-S1, 21.1R2-S2, 21.1R3-S1, 21.1R3-S2, 21.1, 21.1R1, 21.1R2, 21.1R3, 21.2R1-S1, 21.2R1-S2, 21.2R2-S1, 21.2R2-S2, 21.2R3-S1, 21.2R1, 21.2R2, 21.2R3, 21.3R1-S1, 21.3R1-S2, 21.3R2-S1, 21.3R2-S2, 21.3R1, 21.3R2, 21.4R1-S1, 21.4R1-S2, 21.4R1, 21.4R2, 22.1R1-S1, 22.1R1-S2, 22.1R1

---

External links
https://supportportal.juniper.net/s/article/2023-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-a-BGP-rib-sharding-scenario-an-rpd-crash-will-happen-shortly-after-a-specific-CLI-command-is-issued-CVE-2023-28980

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.