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firefox vulnerabilities · Page 14

Vulnerabilities published for firefox in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 694

  1. CVE-2021-23984

    Medium · CVSS 6.5EPSS 1.11%Fix available

    CVE-2021-23984

    A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

    • Update to 87.0+build3-0ubuntu0.18.04.2
    Published Updated
  2. CVE-2021-23985

    Medium · CVSS 6.5EPSS 1.51%Fix available

    CVE-2021-23985

    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.

    • Update to 87.0+build3-0ubuntu0.18.04.2
    Published Updated
  3. CVE-2021-23986

    Medium · CVSS 6.5EPSS 0.43%Fix available

    CVE-2021-23986

    A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.

    • Update to 87.0+build3-0ubuntu0.18.04.2
    Published Updated
  4. CVE-2021-23987

    High · CVSS 8.8EPSS 1.42%Fix available

    CVE-2021-23987

    Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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 ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

    • Update to 87.0+build3-0ubuntu0.18.04.2
    Published Updated
  5. CVE-2021-23988

    High · CVSS 8.8EPSS 1.08%Fix available

    CVE-2021-23988

    Mozilla developers reported memory safety bugs present in Firefox 86. 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 < 87.

    • Update to 87.0+build3-0ubuntu0.18.04.2
    Published Updated
  6. CVE-2021-23964

    High · CVSS 8.8EPSS 1.36%Fix available

    CVE-2021-23964

    Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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, Thunderbird < 78.7, and Firefox ESR < 78.7.

    • Update to 85.0+build1-0ubuntu0.18.04.1
    Published Updated
  7. CVE-2021-23965

    High · CVSS 8.8EPSS 0.97%Fix available

    CVE-2021-23965

    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.

    • Update to 85.0+build1-0ubuntu0.18.04.1
    Published Updated
  8. CVE-2021-23979

    High · CVSS 8.8EPSS 0.92%Fix available

    CVE-2021-23979

    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.

    • Update to 86.0+build3-0ubuntu0.18.04.1
    Published Updated
  9. CVE-2021-23978

    High · CVSS 8.8EPSS 1.53%Fix available

    CVE-2021-23978

    Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. 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, Thunderbird < 78.8, and Firefox ESR < 78.8.

    • Update to 86.0+build3-0ubuntu0.18.04.1
    Published Updated
  10. CVE-2021-23954

    High · CVSS 8.8EPSS 1.19%Fix available

    CVE-2021-23954

    Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

    • Update to 85.0+build1-0ubuntu0.18.04.1
    Published Updated
  11. CVE-2021-23968

    Medium · CVSS 4.3EPSS 1.31%Fix available

    CVE-2021-23968

    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.

    • Update to 86.0+build3-0ubuntu0.18.04.1
    Published Updated

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