Ubuntu Security Notice 6456-2 - USN-6456-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Kelsey Gilbert discovered that Firefox did not properly manage certain browser prompts and dialogs due to an insufficient activation-delay. An attacker could potentially exploit this issue to perform clickjacking. Daniel Veditz discovered that Firefox did not properly validate a cookie containing invalid characters. An attacker could potentially exploit this issue to cause a denial of service. Shaheen Fazim discovered that Firefox did not properly validate the URLs open by installed WebExtension. An attacker could potentially exploit this issue to obtain sensitive information.
2bad4648fdb8de89ff5a341afac7689ce90866c35bf7e250abb3599c54443e6bDebian Linux Security Advisory 5538-1 - Multiple security issues were discovered in Thunderbird, which could result in denial of service or the execution of arbitrary code.
13d430a698ce0376929e6fb9fcb25cf1473b6d7614ae60cd378159bce26b0833Ubuntu Security Notice 6456-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Kelsey Gilbert discovered that Firefox did not properly manage certain browser prompts and dialogs due to an insufficient activation-delay. An attacker could potentially exploit this issue to perform clickjacking.
3a71181f5bb0c5d956c376670a0764c65e741e9fd84d5b5ed5446b241074df73Debian Linux Security Advisory 5535-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, clickjacking, spoofing or information leaks.
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