Vulnerability · Published Oct 22, 2020 · Assigned by mozilla
CVE-2020-15680
Medium 5.3
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)0.9%top 38.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.21 | firefox | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.22 | firefox | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.23 | firefox | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.21 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.22 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.23 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15680 |
| Alpine:v3.24 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15680 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2020-45/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1658881 x_refsource_MISC