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CVE-2020-15665

Status Candidate

Overview

Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox < 80.

Related Files

Ubuntu Security Notice USN-4474-2
Posted Sep 3, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4474-2 - USN-4474-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, trick the user in to installing a malicious extension, spoof the URL bar, leak sensitive information between origins, or execute arbitrary code. It was discovered that NSS incorrectly handled certain signatures. An attacker could possibly use this issue to expose sensitive information. A data race was discovered when importing certificate information in to the trust store. An attacker could potentially exploit this to cause an unspecified impact. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-15665, CVE-2020-15668
SHA-256 | 584112a39c0d75a49b8d4f20934eaf3084c31ce2908581ce5f37a18faf5e8871
Ubuntu Security Notice USN-4474-1
Posted Aug 26, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4474-1 - Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, trick the user in to installing a malicious extension, spoof the URL bar, leak sensitive information between origins, or execute arbitrary code. It was discovered that NSS incorrectly handled certain signatures. An attacker could possibly use this issue to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2020-12400, CVE-2020-15665, CVE-2020-15666, CVE-2020-15668
SHA-256 | 9c3f9b8a995f19fc2e46e69b42485c8da02e85dd0a8cc8530e25b865bb07d168
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