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CVE-2021-43542

CVSS v3.1 6.5 (Medium)
65% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 1.56 % (88th)
1.56% Progress
Affected Products 4
Advisories 31
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Weaknesses
CWE-209
Generation of Error Message Containing Sensitive Information
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-12-08 22:15:09
(2 years ago)
Updated Date
2022-12-09 15:38:33
(21 months ago)

Affected Products

Debian

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 95.0 version cpe:2.3:a:mozilla:firefox < 95.0
  Mozilla Firefox Esr prior 91.4.0 version cpe:2.3:a:mozilla:firefox_esr < 91.4.0
  Mozilla Thunderbird prior 91.4.0 version cpe:2.3:a:mozilla:thunderbird < 91.4.0

Configuration #2

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0
  Debian Linux 11.0 cpe:2.3:o:debian:debian_linux:11.0