Junos OS: Improper Validation of Specified Type of Input
CVE-2024-47504 is a high-severity improper validation of specified type of input vulnerability in Junos OS from Juniper Networks, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 22.2R3-S5, 22.3R3-S4, 22.4R3-S4 as the first without the flaw, so updating Junos OS to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.62% chance of exploitation within 30 days, higher than 50% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Junos OS to 22.2R3-S5 or 22.3R3-S4 or 22.4R3-S4 or 23.2R2-S2, whichever matches your release line, or a later version.
- Update junos to 22.2r3-s5 or 22.3r3-s4 or 22.4r3-s4 or 23.2r2-s2, whichever matches your release line, or a later version.
- Read the advisory on supportportal.juniper.net for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Juniper Networks | Junos OS | 22.2 up to, but not including, 22.2R3-S5; 22.3 up to, but not including, 22.3R3-S4; 22.4 up to, but not including, 22.4R3-S4; 23.2 up to, but not including, 23.2R2-S2; 23.4 up to, but not including, 23.4R2-S1; 24.2 up to, but not including, 24.2R1-S1, 24.2R2 | 22.2R3-S5, 22.3R3-S4, 22.4R3-S4, 23.2R2-S2, 23.4R2-S1, 24.2R1-S1, 24.2R2 |
| Juniper Networks | junos | 22.2 up to, but not including, 22.2r3-s5; 22.3 up to, but not including, 22.3r3-s4; 22.4 up to, but not including, 22.4r3-s4; 23.2 up to, but not including, 23.2r2-s2; 23.4 up to, but not including, 23.4r2-s1; 24.2 up to, but not including, 24.2r1-s1; 24.2 up to, but not including, 24.2r2 | 22.2r3-s5, 22.3r3-s4, 22.4r3-s4, 23.2r2-s2, 23.4r2-s1, 24.2r1-s1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CNA (juniper.net).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.7 | High | CNA (juniper.net) |
| CVSS 3.1 | 7.5 | High | CNA (juniper.net) |
Official description
An Improper Validation of Specified Type of Input vulnerability in the packet forwarding engine (pfe) Juniper Networks Junos OS on SRX5000 Series allows an unauthenticated, network based attacker to cause a Denial of Service (Dos). When a non-clustered SRX5000 device receives a specifically malformed packet this will cause a flowd crash and restart. This issue affects Junos OS: * 22.1 releases 22.1R1 and later before 22.2R3-S5, * 22.3 releases before 22.3R3-S4, * 22.4 releases before 22.4R3-S4, * 23.2 releases before 23.2R2-S2, * 23.4 releases before 23.4R2-S1, * 24.2 releases before 24.2R1-S1, 24.2R2. Please note that the PR does indicate that earlier versions have been fixed as well, but these won't be adversely impacted by this.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Specified Type of Input
The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.
More Improper Validation of Specified Type of Input vulnerabilities (CWE-1287)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Junos OS
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 7.5 High severity
Recent Improper Validation of Specified Type of Input vulnerabilities
- 9.8 Critical severity
ServiceNow Improper Input Validation Exploited
- 9.8 Critical severity
- 8.8 High severity
- 9.0 Critical severity
- 7.5 High severity
- 7.5 High severity
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