Log in Start free

Vulnerability · Published Jan 7, 2021 · Assigned by mozilla

CVE-2020-26975

Medium 6.5

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 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.9%top 40.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

When a malicious application installed on the user's device broadcast an Intent to Firefox for Android, arbitrary headers could have been specified, leading to attacks such as abusing ambient authority or session fixation. This was resolved by only allowing certain safe-listed headers. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20firefox84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.21firefox84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.22firefox84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.23firefox84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.21librewolf84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.22librewolf84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.23librewolf84.0.1-r0ALPINE-CVE-2020-26975
Alpine:v3.24librewolf84.0.1-r0ALPINE-CVE-2020-26975

Affected products (as reported)

VendorProductVersions
Mozilla Firefox unspecified – before 84

References