Mozilla Firefox vulnerabilities

CVE-2021-23962 [HIGH] CVE-2021-23962: Incorrect use of the '<RowCountChanged>' method could have led to a user-after-poison and a potentia Incorrect use of the '' method could have led to a user-after-poison and a potentially exploitable crash. This vulnerability affects Firefox < 85.

CVE-2021-23979 [HIGH] CWE-787 CVE-2021-23979: Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evid Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.

CVE-2021-23960 [HIGH] CVE-2021-23960: Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, a Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVE-2021-23965 [HIGH] CWE-787 CVE-2021-23965: Mozilla developers reported memory safety bugs present in Firefox 84. Some of these bugs showed evid Mozilla developers reported memory safety bugs present in Firefox 84. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 85.

CVE-2021-23976 [HIGH] CVE-2021-23976: When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020

CVE-2021-23974 [MEDIUM] CVE-2021-23974: The DOMParser API did not properly process '<noscript>' elements for escaping. This could be used as The DOMParser API did not properly process '' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox < 86.

CVE-2021-23975 [MEDIUM] CWE-862 CVE-2021-23975: The developer page about:memory has a Measure function for exploring what object types the browser h The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.

CVE-2021-23968 [MEDIUM] CWE-209 CVE-2021-23968: If Content Security Policy blocked frame navigation, the full destination of a redirect served in th If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVE-2021-23956 [MEDIUM] CVE-2021-23956: An ambiguous file picker design could have confused users who intended to select and upload a single An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.

CVE-2021-23953 [MEDIUM] CVE-2021-23953: If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cro If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVE-2021-23955 [MEDIUM] CWE-1021 CVE-2021-23955: The browser could have been confused into transferring a pointer lock state into another tab, which The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox < 85.

CVE-2021-23958 [MEDIUM] CWE-668 CVE-2021-23958: The browser could have been confused into transferring a screen sharing state into another tab, whic The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information. This vulnerability affects Firefox < 85.

CVE-2021-23977 [MEDIUM] CWE-367 CVE-2021-23977: Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious 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.

CVE-2021-23971 [MEDIUM] CVE-2021-23971: When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redire When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.

CVE-2021-23963 [MEDIUM] CWE-281 CVE-2021-23963: When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing state in the user interface, leading to loss of control over the currently granted permission. This vulnerability affects Firefox < 85.

CVE-2021-23970 [MEDIUM] CWE-617 CVE-2021-23970: Context-specific code was included in a shared jump table; resulting in assertions being triggered i Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox < 86.

CVE-2021-23973 [MEDIUM] CWE-209 CVE-2021-23973: When trying to load a cross-origin resource in an audio/video context a decoding error may have resu When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVE-2021-23969 [MEDIUM] CVE-2021-23969: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agent As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the s

CVE-2021-23959 [MEDIUM] CWE-79 CVE-2021-23959: An XSS bug in internal error pages could have led to various spoofing attacks, including other error An XSS bug in internal error pages could have led to various spoofing attacks, including other error pages and the address bar. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.

CVE-2020-16012 [MEDIUM] CVE-2020-16012: Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.