CVE-2021-23977 — Time-of-check Time-of-use (TOCTOU) Race Condition in Mozilla Firefox
Severity
5.3MEDIUMNVD
EPSS
0.4%
top 41.01%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 26
Latest updateMay 24
Description
Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious application to read sensitive data from application directories. Note: This issue is only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 1.6 | Impact: 3.6
Affected Packages4 packages
🔴Vulnerability Details
2GHSA▶
GHSA-cc5x-973x-6p4m: Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious application to read sensitive data from applicati↗2022-05-24
OSV▶
CVE-2021-23977: Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious application to read sensitive data from applicati↗2021-02-26