CVE-2024-30394

A Stack-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) component of Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an rpd crash, leading to Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when EVPN is configured, and a specific EVPN type-5 route is received via BGP, rpd crashes and restarts. Continuous receipt of this specific route will lead to a sustained Denial of Service (DoS) condition.

This issue affects: Junos OS:

all versions before 21.2R3-S7,
from 21.4 before 21.4R3-S5,
from 22.1 before 22.1R3-S4,
from 22.2 before 22.2R3-S2,
from 22.3 before 22.3R3-S1,
from 22.4 before 22.4R3,
from 23.2 before 23.2R2.

Junos OS Evolved:

all versions before 21.4R3-S5-EVO,
from 22.1-EVO before 22.1R3-S4-EVO,
from 22.2-EVO before 22.2R3-S2-EVO,
from 22.3-EVO before 22.3R3-S1-EVO,
from 22.4-EVO before 22.4R3-EVO,
from 23.2-EVO before 23.2R2-EVO.

Weakness

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Software

Name	Vendor	Start Version	End Version
Junos	Juniper	*	21.2 (excluding)
Junos	Juniper	21.2 (including)	21.2 (including)
Junos	Juniper	21.2-r1 (including)	21.2-r1 (including)
Junos	Juniper	21.2-r1-s1 (including)	21.2-r1-s1 (including)
Junos	Juniper	21.2-r1-s2 (including)	21.2-r1-s2 (including)
Junos	Juniper	21.2-r2 (including)	21.2-r2 (including)
Junos	Juniper	21.2-r2-s1 (including)	21.2-r2-s1 (including)
Junos	Juniper	21.2-r2-s2 (including)	21.2-r2-s2 (including)
Junos	Juniper	21.2-r3 (including)	21.2-r3 (including)
Junos	Juniper	21.2-r3-s1 (including)	21.2-r3-s1 (including)
Junos	Juniper	21.2-r3-s2 (including)	21.2-r3-s2 (including)
Junos	Juniper	21.2-r3-s3 (including)	21.2-r3-s3 (including)
Junos	Juniper	21.2-r3-s4 (including)	21.2-r3-s4 (including)
Junos	Juniper	21.2-r3-s5 (including)	21.2-r3-s5 (including)
Junos	Juniper	21.2-r3-s6 (including)	21.2-r3-s6 (including)
Junos	Juniper	21.4 (including)	21.4 (including)
Junos	Juniper	21.4-r1 (including)	21.4-r1 (including)
Junos	Juniper	21.4-r1-s1 (including)	21.4-r1-s1 (including)
Junos	Juniper	21.4-r1-s2 (including)	21.4-r1-s2 (including)
Junos	Juniper	21.4-r2 (including)	21.4-r2 (including)
Junos	Juniper	21.4-r2-s1 (including)	21.4-r2-s1 (including)
Junos	Juniper	21.4-r2-s2 (including)	21.4-r2-s2 (including)
Junos	Juniper	21.4-r3 (including)	21.4-r3 (including)
Junos	Juniper	21.4-r3-s1 (including)	21.4-r3-s1 (including)
Junos	Juniper	21.4-r3-s2 (including)	21.4-r3-s2 (including)
Junos	Juniper	21.4-r3-s3 (including)	21.4-r3-s3 (including)
Junos	Juniper	21.4-r3-s4 (including)	21.4-r3-s4 (including)
Junos	Juniper	22.1 (including)	22.1 (including)
Junos	Juniper	22.1-r1 (including)	22.1-r1 (including)
Junos	Juniper	22.1-r1-s1 (including)	22.1-r1-s1 (including)
Junos	Juniper	22.1-r1-s2 (including)	22.1-r1-s2 (including)
Junos	Juniper	22.1-r2 (including)	22.1-r2 (including)
Junos	Juniper	22.1-r2-s1 (including)	22.1-r2-s1 (including)
Junos	Juniper	22.1-r2-s2 (including)	22.1-r2-s2 (including)
Junos	Juniper	22.1-r3 (including)	22.1-r3 (including)
Junos	Juniper	22.1-r3-s1 (including)	22.1-r3-s1 (including)
Junos	Juniper	22.1-r3-s2 (including)	22.1-r3-s2 (including)
Junos	Juniper	22.1-r3-s3 (including)	22.1-r3-s3 (including)
Junos	Juniper	22.2 (including)	22.2 (including)
Junos	Juniper	22.2-r1 (including)	22.2-r1 (including)
Junos	Juniper	22.2-r1-s1 (including)	22.2-r1-s1 (including)
Junos	Juniper	22.2-r1-s2 (including)	22.2-r1-s2 (including)
Junos	Juniper	22.2-r2 (including)	22.2-r2 (including)
Junos	Juniper	22.2-r2-s1 (including)	22.2-r2-s1 (including)
Junos	Juniper	22.2-r2-s2 (including)	22.2-r2-s2 (including)
Junos	Juniper	22.2-r3 (including)	22.2-r3 (including)
Junos	Juniper	22.2-r3-s1 (including)	22.2-r3-s1 (including)
Junos	Juniper	22.3 (including)	22.3 (including)
Junos	Juniper	22.3-r1 (including)	22.3-r1 (including)
Junos	Juniper	22.3-r1-s1 (including)	22.3-r1-s1 (including)
Junos	Juniper	22.3-r1-s2 (including)	22.3-r1-s2 (including)
Junos	Juniper	22.3-r2 (including)	22.3-r2 (including)
Junos	Juniper	22.3-r2-s1 (including)	22.3-r2-s1 (including)
Junos	Juniper	22.3-r2-s2 (including)	22.3-r2-s2 (including)
Junos	Juniper	22.3-r3 (including)	22.3-r3 (including)
Junos	Juniper	22.4 (including)	22.4 (including)
Junos	Juniper	22.4-r1 (including)	22.4-r1 (including)
Junos	Juniper	22.4-r1-s1 (including)	22.4-r1-s1 (including)
Junos	Juniper	22.4-r1-s2 (including)	22.4-r1-s2 (including)
Junos	Juniper	22.4-r2 (including)	22.4-r2 (including)
Junos	Juniper	22.4-r2-s1 (including)	22.4-r2-s1 (including)
Junos	Juniper	22.4-r2-s2 (including)	22.4-r2-s2 (including)
Junos	Juniper	23.2 (including)	23.2 (including)
Junos	Juniper	23.2-r1 (including)	23.2-r1 (including)
Junos	Juniper	23.2-r1-s1 (including)	23.2-r1-s1 (including)
Junos	Juniper	23.2-r1-s2 (including)	23.2-r1-s2 (including)
Junos_os_evolved	Juniper	*	21.4 (excluding)
Junos_os_evolved	Juniper	21.4 (including)	21.4 (including)
Junos_os_evolved	Juniper	21.4-r1 (including)	21.4-r1 (including)
Junos_os_evolved	Juniper	21.4-r1-s1 (including)	21.4-r1-s1 (including)
Junos_os_evolved	Juniper	21.4-r1-s2 (including)	21.4-r1-s2 (including)
Junos_os_evolved	Juniper	21.4-r2 (including)	21.4-r2 (including)
Junos_os_evolved	Juniper	21.4-r2-s1 (including)	21.4-r2-s1 (including)
Junos_os_evolved	Juniper	21.4-r2-s2 (including)	21.4-r2-s2 (including)
Junos_os_evolved	Juniper	21.4-r3 (including)	21.4-r3 (including)
Junos_os_evolved	Juniper	21.4-r3-s1 (including)	21.4-r3-s1 (including)
Junos_os_evolved	Juniper	21.4-r3-s2 (including)	21.4-r3-s2 (including)
Junos_os_evolved	Juniper	21.4-r3-s3 (including)	21.4-r3-s3 (including)
Junos_os_evolved	Juniper	21.4-r3-s4 (including)	21.4-r3-s4 (including)
Junos_os_evolved	Juniper	22.1 (including)	22.1 (including)
Junos_os_evolved	Juniper	22.1-r1 (including)	22.1-r1 (including)
Junos_os_evolved	Juniper	22.1-r1-s1 (including)	22.1-r1-s1 (including)
Junos_os_evolved	Juniper	22.1-r1-s2 (including)	22.1-r1-s2 (including)
Junos_os_evolved	Juniper	22.1-r2 (including)	22.1-r2 (including)
Junos_os_evolved	Juniper	22.1-r2-s1 (including)	22.1-r2-s1 (including)
Junos_os_evolved	Juniper	22.1-r3 (including)	22.1-r3 (including)
Junos_os_evolved	Juniper	22.1-r3-s1 (including)	22.1-r3-s1 (including)
Junos_os_evolved	Juniper	22.1-r3-s2 (including)	22.1-r3-s2 (including)
Junos_os_evolved	Juniper	22.1-r3-s3 (including)	22.1-r3-s3 (including)
Junos_os_evolved	Juniper	22.2 (including)	22.2 (including)
Junos_os_evolved	Juniper	22.2-r1 (including)	22.2-r1 (including)
Junos_os_evolved	Juniper	22.2-r1-s1 (including)	22.2-r1-s1 (including)
Junos_os_evolved	Juniper	22.2-r1-s2 (including)	22.2-r1-s2 (including)
Junos_os_evolved	Juniper	22.2-r2 (including)	22.2-r2 (including)
Junos_os_evolved	Juniper	22.2-r2-s1 (including)	22.2-r2-s1 (including)
Junos_os_evolved	Juniper	22.2-r2-s2 (including)	22.2-r2-s2 (including)
Junos_os_evolved	Juniper	22.2-r3 (including)	22.2-r3 (including)
Junos_os_evolved	Juniper	22.2-r3-s1 (including)	22.2-r3-s1 (including)
Junos_os_evolved	Juniper	22.3 (including)	22.3 (including)
Junos_os_evolved	Juniper	22.3-r1 (including)	22.3-r1 (including)
Junos_os_evolved	Juniper	22.3-r1-s1 (including)	22.3-r1-s1 (including)
Junos_os_evolved	Juniper	22.3-r1-s2 (including)	22.3-r1-s2 (including)
Junos_os_evolved	Juniper	22.3-r2 (including)	22.3-r2 (including)
Junos_os_evolved	Juniper	22.3-r2-s1 (including)	22.3-r2-s1 (including)
Junos_os_evolved	Juniper	22.3-r2-s2 (including)	22.3-r2-s2 (including)
Junos_os_evolved	Juniper	22.3-r3 (including)	22.3-r3 (including)
Junos_os_evolved	Juniper	22.4 (including)	22.4 (including)
Junos_os_evolved	Juniper	22.4-r1 (including)	22.4-r1 (including)
Junos_os_evolved	Juniper	22.4-r1-s1 (including)	22.4-r1-s1 (including)
Junos_os_evolved	Juniper	22.4-r1-s2 (including)	22.4-r1-s2 (including)
Junos_os_evolved	Juniper	22.4-r2 (including)	22.4-r2 (including)
Junos_os_evolved	Juniper	22.4-r2-s1 (including)	22.4-r2-s1 (including)
Junos_os_evolved	Juniper	22.4-r2-s2 (including)	22.4-r2-s2 (including)
Junos_os_evolved	Juniper	23.2 (including)	23.2 (including)
Junos_os_evolved	Juniper	23.2-r1 (including)	23.2-r1 (including)
Junos_os_evolved	Juniper	23.2-r1-s1 (including)	23.2-r1-s1 (including)
Junos_os_evolved	Juniper	23.2-r1-s2 (including)	23.2-r1-s2 (including)

Potential Mitigations

Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

NVD	https://nvd.nist.gov/vuln/detail/CVE-2024-30394
CWE	https://cwe.mitre.org/data/definitions/121.html

Stack-based Buffer Overflow

Weakness

Affected Software

Potential Mitigations

References