Reactor Netty up to 0.8.15/0.9.4 HttpClient Credentials insufficiently protected credentials
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.3 | $0-$5k | 0.00 |
Summary
A vulnerability classified as problematic has been found in Reactor Netty up to 0.8.15/0.9.4. This vulnerability affects unknown code of the component HttpClient. This manipulation causes insufficiently protected credentials (Credentials). This vulnerability is registered as CVE-2020-5404. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.
Details
A vulnerability has been found in Reactor Netty up to 0.8.15/0.9.4 (JavaScript Library) and classified as problematic. Affected by this vulnerability is some unknown processing of the component HttpClient. The manipulation with an unknown input leads to a insufficiently protected credentials vulnerability (Credentials). The CWE definition for the vulnerability is CWE-522. The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. As an impact it is known to affect confidentiality. The summary by CVE is:
The HttpClient from Reactor Netty, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects.
The weakness was published 03/03/2020 (Website). It is possible to read the advisory at pivotal.io. This vulnerability is known as CVE-2020-5404 since 01/03/2020. The exploitation appears to be difficult. The attack can be launched remotely. Required for exploitation is a single authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.
Upgrading to version 0.8.16 or 0.9.5 eliminates this vulnerability.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Product
Type
Vendor
Name
Version
- 0.8.0
- 0.8.1
- 0.8.2
- 0.8.3
- 0.8.4
- 0.8.5
- 0.8.6
- 0.8.7
- 0.8.8
- 0.8.9
- 0.8.10
- 0.8.11
- 0.8.12
- 0.8.13
- 0.8.14
- 0.8.15
- 0.9.0
- 0.9.1
- 0.9.2
- 0.9.3
- 0.9.4
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.3
VulDB Base Score: 3.0
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CNA Base Score: 6.5
CNA Vector (Pivotal Software, Inc.): 🔍
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
Name: CredentialsClass: Insufficiently protected credentials / Credentials
CWE: CWE-522
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Netty 0.8.16/0.9.5
Timeline
01/03/2020 🔍03/03/2020 🔍
03/04/2020 🔍
05/11/2025 🔍
Sources
Advisory: pivotal.ioStatus: Confirmed
CVE: CVE-2020-5404 (🔍)
GCVE (CVE): GCVE-0-2020-5404
GCVE (VulDB): GCVE-100-150835
Entry
Created: 03/04/2020 09:09Updated: 05/11/2025 14:23
Changes: 03/04/2020 09:09 (40), 03/04/2020 09:59 (12), 04/09/2024 11:07 (34), 05/11/2025 14:23 (5)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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