CVE-2021-23986
Summary
| CVE | CVE-2021-23986 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-03-31 14:15:00 UTC |
| Updated | 2021-08-06 18:18:00 UTC |
| Description | A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87. |
Risk And Classification
Problem Types: CWE-346
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Mozilla Firefox: Multiple vulnerabilities (GLSA 202104-10) — Gentoo security | GENTOO | security.gentoo.org | |
| Access Denied | MISC | bugzilla.mozilla.org | |
| Security Vulnerabilities fixed in Firefox 87 — Mozilla | MISC | www.mozilla.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 198311 Ubuntu Security Notification for Firefox Vulnerabilities (USN-4893-1)
- 375408 Mozilla Firefox Multiple Vulnerabilities (MFSA2021-10)
- 501555 Alpine Linux Security Update for firefox
- 503846 Alpine Linux Security Update for firefox
- 630668 Mozilla Firefox for Android and iOS Multiple Vulnerabilities (MFSA2021-10)
- 710020 Gentoo Linux Mozilla Firefox Multiple Vulnerabilities (GLSA 202104-10)