CVE-2019-20437
What it is
An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. When a custom claim dialect with an XSS payload is configured in the identity provider basic claim configuration, that payload gets executed, if a user picks up that dialect's URI as the provisioning claim in the advanced claim configuration of the same Identity Provider. The attacker also needs to have privileges to log in to the management console, and to add and update identity provider configurations.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
- Exploit odds
- 1.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.3% in the next 30 days (EPSS).
- Severity: 6.1 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.3% · EPSS, next 30 days
- Weakness
- CWE-79 · Cross-site scripting
- Record status
- Modified
Affected
- wso2 Api Manager 2.6.0
- wso2 Identity Server 5.7.0
- wso2 Identity Server 5.8.0
Attack profile CVSS 3.1 · 6.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2019-20437.md and follow it. Check whether this project is affected by CVE-2019-20437. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
References
- https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
- https://github.com/cybersecurityworks/Disclosed/issues/20
- https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
- https://github.com/cybersecurityworks/Disclosed/issues/20