Out-of-bounds read in Junos OS - CVE-2023-36838
Published: July 16, 2023
Vulnerability identifier: #VU78279
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2023-36838
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the flow processing daemon (flowd). A local user can excute a specific CLI command to trigger an out-of-bounds read error and crash the flowd.
Affected software
Junos OS
How to mitigate CVE-2023-36838
Install updates from vendor's website.
Junos OS - addressed in versions 20.2R3-S7, 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1-S1, 22.4R2, 23.1R1