SRX Series and MX Series: An FPC core is observed when IDP is enabled on the device and a specific malformed SSL packet is received
Published Jul 14, 2023
7.5
HIGHCVSS 3.1
EPSS 0.63%
Description
An Improper Validation of Syntactic Correctness of Input vulnerability in Intrusion Detection and Prevention (IDP) of Juniper Networks SRX Series and MX Series allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). Continued receipt of this specific packet will cause a sustained Denial of Service condition.
On all SRX Series and MX Series platforms, where IDP is enabled and a specific malformed SSL packet is received, the SSL detector crashes leading to an FPC core.
This issue affects Juniper Networks SRX Series and MX Series prior to SigPack 3598.
In order to identify the current SigPack version, following command can be used:
user@junos# show security idp security-package-version
Affected products
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- Version unspecifiedStatusaffectedConstraints<SigPack 3598
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | unaffected |
|
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- Version 0StatusaffectedConstraints<SigPack 3598
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | n/a |
|
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The following software releases have been updated to resolve this specific issue: SigPack 3598, and all subsequent releases.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 7, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (7 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.63% (0.00626) | 48.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.52% (0.00524) | 40.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.24% (0.00238) | 44.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00078) | 35.43th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00055) | 22.75th | v3 (v2023.03.01) |
| May 10, 2024 | 0.05% (0.00046) | 16.10th | v3 (v2023.03.01) |
| Jul 15, 2023 | 0.05% (0.00046) | 14.08th | v3 (v2023.03.01) |
References (1)
- https://supportportal.juniper.net/JSA71662 Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://supportportal.juniper.net/JSA71662 | Vendor Advisory |
Change history (0)
No recorded changes yet.