XSS in Wso2 API Manager
CVE-2019-20436
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. If there is a claim dialect configured with an XSS payload in the dialect URI, and a user picks up this dialect's URI and adds it as the service provider claim dialect while configuring the service provider, that payload gets executed. The attacker also needs to have privileges to log in to the management console, and to add and configure claim dialects.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Wso2 API Manager — versions 2.6.0
- Wso2 Identity Server — versions 5.7.0, 5.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634 (Vendor Advisory)
- github.com/cybersecurityworks/Disclosed/issues/19 (Exploit, Third Party Advisory)
- cybersecurityworks.com/zerodays/cve-2019-20436-wso2.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20436?
- CVE-2019-20436 is a medium-severity vulnerability in Wso2 API Manager, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-01-28.
- How severe is CVE-2019-20436?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-20436 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.