Summary
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)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | firefox | 84.0+build3-0ubuntu0.16.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | firefox | 84.0+build3-0ubuntu0.18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | firefox | 84.0+build3-0ubuntu0.20.04.1 |
Vulnerabilities 11
-
Unscored —
Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain potentially sensitiv…
-
Unscored —
Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video …
-
Unscored —
The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they…
-
Unscored —
Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been u…
-
Unscored —
When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wro…
-
Unscored —
When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service w…
-
Unscored —
Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network…
-
Unscored —
When a user typed a URL in the address bar or the search bar and quickly hit the enter key, a website could sometimes c…
-
Unscored —
When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not trig…
-
Unscored —
Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. Some of these bugs showed ev…
-
Unscored —
Mozilla developers reported memory safety bugs present in Firefox 83. Some of these bugs showed evidence of memory corr…
References
-
report
https://ubuntu.com/security/CVE-2020-16042
-
report
https://ubuntu.com/security/CVE-2020-26971
-
report
https://ubuntu.com/security/CVE-2020-26972
-
report
https://ubuntu.com/security/CVE-2020-26973
-
report
https://ubuntu.com/security/CVE-2020-26974
-
report
https://ubuntu.com/security/CVE-2020-26976
-
report
https://ubuntu.com/security/CVE-2020-26978
-
report
https://ubuntu.com/security/CVE-2020-26979
-
report
https://ubuntu.com/security/CVE-2020-35111
-
report
https://ubuntu.com/security/CVE-2020-35113
-
report
https://ubuntu.com/security/CVE-2020-35114