CVE-2024-39561
Severity CVSS v4.0:
MEDIUM
Type:
Unavailable / Other
Publication date:
10/07/2024
Last modified:
10/04/2025
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on <br />
<br />
SRX4600 and SRX5000 Series<br />
<br />
allows an attacker to send TCP packets with <br />
<br />
SYN/FIN or SYN/RST<br />
<br />
flags, bypassing the expected blocking of these packets.<br />
<br />
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.<br />
<br />
This issue affects Junos OS on SRX4600 and SRX5000 Series: <br />
<br />
<br />
* All versions before 21.2R3-S8, <br />
* from 21.4 before 21.4R3-S7, <br />
* from 22.1 before 22.1R3-S6, <br />
* from 22.2 before 22.2R3-S4, <br />
* from 22.3 before 22.3R3-S3, <br />
* from 22.4 before 22.4R3-S2, <br />
* from 23.2 before 23.2R2, <br />
* from 23.4 before 23.4R1-S1, 23.4R2.
Impact
Base Score 4.0
6.90
Severity 4.0
MEDIUM
Base Score 3.x
5.80
Severity 3.x
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | 21.2 (excluding) | |
cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:* | ||
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:r1-s2:*:*:*:*:*:* | ||
cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:* | ||
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:21.2:r3:*:*:*:*:*:* | ||
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:21.2:r3-s3:*:*:*:*:*:* | ||
cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:* | ||
cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:* | ||
cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page