{"id":"CVE-2021-23985","state":"PUBLISHED","title":"If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in ","description":"If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87.","publishedAt":"2021-03-31T13:41:20.000Z","updatedAt":"2024-08-03T19:14:09.968Z","severity":null,"assigner":"mozilla","products":["Mozilla Firefox"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"87","versionType":"custom"}]}],"references":["https://www.mozilla.org/security/advisories/mfsa2021-10/","https://bugzilla.mozilla.org/show_bug.cgi?id=1659129"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:04.982Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/23xxx/CVE-2021-23985.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-23985","state":"PUBLISHED","datePublished":"2021-03-31T13:41:20.000Z","dateUpdated":"2024-08-03T19:14:09.968Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2021-01-13T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"87","versionType":"custom"}]}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-10/","tags":["x_refsource_MISC"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1659129","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Devtools remote debugging feature could have been enabled without indication to the user","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mozilla","dateUpdated":"2021-06-24T13:28:31.000Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@mozilla.org","ID":"CVE-2021-23985","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Firefox","version":{"version_data":[{"version_affected":"<","version_value":"87"}]}}]},"vendor_name":"Mozilla"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Devtools remote debugging feature could have been enabled without indication to the user"}]}]},"references":{"reference_data":[{"name":"https://www.mozilla.org/security/advisories/mfsa2021-10/","refsource":"MISC","url":"https://www.mozilla.org/security/advisories/mfsa2021-10/"},{"name":"https://bugzilla.mozilla.org/show_bug.cgi?id=1659129","refsource":"MISC","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1659129"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-10/","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1659129","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T19:14:09.968Z"}}]}}}