| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.3 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Oracle Blockchain Platform. It has been declared as critical. This affects an unknown part of the component BCS Console. Such manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2021-23017. The attack can be executed remotely. Additionally, an exploit exists.
Details
A vulnerability, which was classified as critical, has been found in Oracle Blockchain Platform (version now known). Affected by this issue is some unknown processing of the component BCS Console. Using CWE to declare the problem leads to CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. Impacted is confidentiality, integrity, and availability.
The weakness was released 04/18/2023 as Oracle Critical Patch Update Advisory - April 2023. The advisory is shared for download at oracle.com. This vulnerability is handled as CVE-2021-23017. Technical details are unknown but a public exploit is available.
The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 236746 (Alibaba Cloud Linux 3 : 0036: nginx:1.18 (ALINUX3-SA-2021:0036)), 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 databases at Exploit-DB (50973) and Tenable (236746). Once again VulDB remains the best source for vulnerability data.
Product
Vendor
Name
License
Website
- Vendor: https://www.oracle.com
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.7VulDB Meta Temp Score: 7.3
VulDB Base Score: 7.7
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.7
NVD Vector: 🔍
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: Off-by-oneCWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 236746
Nessus Name: Alibaba Cloud Linux 3 : 0036: nginx:1.18 (ALINUX3-SA-2021:0036)
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
01/06/2021 🔍04/18/2023 🔍
04/18/2023 🔍
04/18/2023 🔍
05/16/2025 🔍
Sources
Vendor: oracle.comAdvisory: Oracle Critical Patch Update Advisory - April 2023
Status: Confirmed
CVE: CVE-2021-23017 (🔍)
GCVE (CVE): GCVE-0-2021-23017
GCVE (VulDB): GCVE-100-226316
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 04/18/2023 23:15Updated: 05/16/2025 02:00
Changes: 04/18/2023 23:15 (36), 05/09/2023 08:37 (2), 05/09/2023 08:39 (18), 10/24/2024 12:30 (24), 05/16/2025 02:00 (2)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
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