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Ubuntu: USN-4671-1 (CVE-2020-26793): Firefox vulnerabilities

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Ubuntu: USN-4671-1 (CVE-2020-26793): Firefox vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/15/2020
Created
12/17/2020
Added
12/16/2020
Modified
03/22/2023

Description

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, bypass the CSS sanitizer, bypass security restrictions, spoof the URL bar, or execute arbitrary code. (CVE-2020-16042, CVE-2020-26971, CVE-2020-26972, CVE-2020-26793, CVE-2020-26974, CVE-2020-26976, CVE-2020-26978, CVE-2020-26979, CVE-2020-35113, CVE-2020-35114)It was discovered that the proxy.onRequest API did not catch view-source URLs. If a user were tricked in to installing an extension with the proxy permission and opening View Source, an attacker could potentially exploit this to obtain sensitive information. (CVE-2020-35111)

Solution(s)

  • ubuntu-upgrade-firefox

References

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