Packages
- firefox - Mozilla Open Source web browser
Details
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....
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)
Update instructions
After a standard system update you need to restart Firefox to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 20.10 groovy | firefox – 84.0+build3-0ubuntu0.20.10.1 | ||
| 20.04 focal | firefox – 84.0+build3-0ubuntu0.20.04.1 | ||
| 18.04 bionic | firefox – 84.0+build3-0ubuntu0.18.04.1 | ||
| 16.04 xenial | firefox – 84.0+build3-0ubuntu0.16.04.1 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.
References
- CVE-2020-35114
- CVE-2020-35113
- CVE-2020-35111
- CVE-2020-26979
- CVE-2020-26978
- CVE-2020-26976
- CVE-2020-26974
- CVE-2020-26973
- CVE-2020-26972
- CVE-2020-26971
- CVE-2020-35114
- CVE-2020-35113
- CVE-2020-35111
- CVE-2020-26979
- CVE-2020-26978
- CVE-2020-26976
- CVE-2020-26974
- CVE-2020-26973
- CVE-2020-26972
- CVE-2020-26971
- CVE-2020-16042