Oracle Communications Diameter Signaling Router 8.6.0.0 Platform use after free
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 9.1 | $5k-$25k | 0.00 |
Summary
A vulnerability classified as very critical has been found in Oracle Communications Diameter Signaling Router 8.6.0.0. This issue affects some unknown processing of the component Platform. Performing a manipulation results in an unknown weakness. This vulnerability was named CVE-2021-21708. The attack may be initiated remotely. There is no available exploit.
Details
A vulnerability, which was classified as very critical, was found in Oracle Communications Diameter Signaling Router 8.6.0.0 (Cloud Software). This affects some unknown processing of the component Platform. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was presented 10/19/2022 as Oracle Critical Patch Update Advisory - October 2022. The advisory is shared at oracle.com. This vulnerability is uniquely identified as CVE-2021-21708. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/23/2025).
We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 233258 (RHEL 8 : php:7.4 (RHSA-2025:3016)), which helps to determine the existence of the flaw in a target environment.
A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (233258). If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.oracle.com
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.3VulDB Meta Temp Score: 9.1
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CNA Base Score: 8.2
CNA Vector (PHP Group): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 233258
Nessus Name: RHEL 8 : php:7.4 (RHSA-2025:3016)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
01/04/2021 🔍10/19/2022 🔍
10/19/2022 🔍
10/19/2022 🔍
03/23/2025 🔍
Sources
Vendor: oracle.comAdvisory: Oracle Critical Patch Update Advisory - October 2022
Status: Confirmed
CVE: CVE-2021-21708 (🔍)
GCVE (CVE): GCVE-0-2021-21708
GCVE (VulDB): GCVE-100-211413
Entry
Created: 10/19/2022 08:29Updated: 03/23/2025 05:14
Changes: 10/19/2022 08:29 (38), 11/10/2022 21:08 (2), 11/10/2022 21:22 (30), 03/23/2025 05:14 (16)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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