SB2024041107 - Stack-based buffer overflow in Juniper Junos OS

Security Bulletin ID SB2024041107

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Stack-based buffer overflow (CVE-ID: CVE-2024-30392)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to stack-based buffer overflow error in Flow Processing Daemon (flowd). A remote non-authenticated attacker can cause Denial of Service (DoS).

On all Junos OS MX Series platforms with SPC3 and MS-MPC/-MIC, when URL filtering is enabled and a specific URL request is received and processed, flowd will crash and restart.

Continuous reception of the specific URL request will lead to a sustained Denial of Service (DoS) condition.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-and-MS-MPC-MIC-When-URL-filtering-is-enabled-and-a-specific-URL-request-is-received-a-flowd-crash-occurs-CVE-2024-30392