Vulnerability Details : CVE-2023-22402
A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if "bgp auto-discovery" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason. This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2023-22402
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:22.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-22402
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-22402
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
Juniper Networks, Inc. |
CWE ids for CVE-2023-22402
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Primary)
- sirt@juniper.net (Secondary)
References for CVE-2023-22402
-
https://kb.juniper.net/JSA70198
2023-01 Security Bulletin: Junos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flaps (CVE-2023-22402)Vendor Advisory
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