Vulnerability Details : CVE-2023-36841
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows a unauthenticated network-based attacker to cause an infinite loop, resulting in a Denial of Service (DoS).
An attacker who sends malformed TCP traffic via an interface configured with PPPoE, causes an infinite loop on the respective PFE. This results in consuming all resources and a manual restart is needed to recover.
This issue affects interfaces with PPPoE configured and tcp-mss enabled.
This issue affects Juniper Networks Junos OS
* All versions prior to 20.4R3-S7;
* 21.1 version 21.1R1 and later versions;
* 21.2 versions prior to 21.2R3-S6;
* 21.3 versions prior to 21.3R3-S5;
* 21.4 versions prior to 21.4R3-S3;
* 22.1 versions prior to 22.1R3-S4;
* 22.2 versions prior to 22.2R3;
* 22.3 versions prior to 22.3R2-S2;
* 22.4 versions prior to 22.4R2;
Vulnerability category: Denial of service
Products affected by CVE-2023-36841
- cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:20.4:r3-s6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.1:r3-s5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.3:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-36841
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-36841
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Juniper Networks, Inc. |
CWE ids for CVE-2023-36841
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Primary)
- sirt@juniper.net (Secondary)
References for CVE-2023-36841
-
https://supportportal.juniper.net/JSA73172
2023-10 Security Bulletin: Junos OS: MX Series: Receipt of malformed TCP traffic will cause a Denial of Service (CVE-2023-36841)Vendor Advisory
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