Vulnerability Details : CVE-2024-39561
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on
SRX4600 and SRX5000 Series
allows an attacker to send TCP packets with
SYN/FIN or SYN/RST
flags, bypassing the expected blocking of these packets.
A TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. However, when no-syn-check and Express Path are enabled, these TCP packets are unexpectedly transferred to the downstream network.
This issue affects Junos OS on SRX4600 and SRX5000 Series:
* All versions before 21.2R3-S8,
* from 21.4 before 21.4R3-S7,
* from 22.1 before 22.1R3-S6,
* from 22.2 before 22.2R3-S4,
* from 22.3 before 22.3R3-S3,
* from 22.4 before 22.4R3-S2,
* from 23.2 before 23.2R2,
* from 23.4 before 23.4R1-S1, 23.4R2.
Products affected by CVE-2024-39561
- cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
- 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:21.4: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:21.2:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:*
- 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:21.2: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: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:21.2: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:22.2:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:*
- 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:22.4:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.2:r3-s7:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.1:r3-s5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:21.4:r3-s6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.2:r3-s3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.3:r3-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2024-39561
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2024-39561
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
3.9
|
1.4
|
Juniper Networks, Inc. | 2024-07-10 |
|
6.9
|
MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/V... |
N/A
|
N/A
|
Juniper Networks, Inc. | 2024-07-10 |
CWE ids for CVE-2024-39561
-
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.Assigned by:
- nvd@nist.gov (Primary)
- sirt@juniper.net (Secondary)
References for CVE-2024-39561
-
https://supportportal.juniper.net/JSA83021
2024-07 Security Bulletin: Junos OS: SRX4600, SRX5000 Series: TCP packets with SYN/FIN or SYN/RST are transferred after enabling no-syn-check with Express Path (CVE-2024-39561)Vendor Advisory
Jump to