Vulnerability in Mozilla Firefox
CVE-2020-12415
When "%2F" was present in a manifest URL, Firefox's AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78.
EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Mozilla Firefox — versions unspecified
- Opensuse Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2020-12415?
- CVE-2020-12415 is a medium-severity vulnerability in Mozilla Firefox, classified under Incorrect Default Permissions. CVSS score: 6.5/10. Published 2020-07-09.
- How severe is CVE-2020-12415?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-12415 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.