Backstage is an open platform for building developer portals. In affected versions the auth-backend plugin allows a malicious actor to trick another user into visiting a vulnerable URL that executes an XSS attack. This attack can potentially allow the attacker to exfiltrate access tokens or other secrets from the user's browser. The default CSP does prevent this attack, but it is expected that some deployments have these policies disabled due to incompatibilities. This is vulnerability is patched in version `0.4.9` of `@backstage/plugin-auth-backend`.
References
| Link | Resource |
|---|---|
| https://github.com/backstage/backstage/security/advisories/GHSA-w7fj-336r-vw49 | Third Party Advisory |
| https://github.com/backstage/backstage/tree/master/plugins/auth-backend | Product Third Party Advisory |
| https://github.com/backstage/backstage/security/advisories/GHSA-w7fj-336r-vw49 | Third Party Advisory |
| https://github.com/backstage/backstage/tree/master/plugins/auth-backend | Product Third Party Advisory |
Configurations
History
21 Nov 2024, 06:29
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 4.3
v3 : 7.4 |
| References | () https://github.com/backstage/backstage/security/advisories/GHSA-w7fj-336r-vw49 - Third Party Advisory | |
| References | () https://github.com/backstage/backstage/tree/master/plugins/auth-backend - Product, Third Party Advisory |
Information
Published : 2021-11-26 19:15
Updated : 2024-11-21 06:29
NVD link : CVE-2021-43776
Mitre link : CVE-2021-43776
CVE.ORG link : CVE-2021-43776
JSON object : View
Products Affected
linuxfoundation
- auth_backend
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')