Linux · Ubuntu · Package update · November 16, 2020

firefox 83.0+build2-0ubuntu0.18.04.2: firefox 83.0+build2-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)

firefox 83.0+build2-0ubuntu0.18.04.2, released November 16, 2020, fixes 15 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

HighUnsupported product
CVEs closed
15
None rated Critical
Exploited
0
None reported
Highest CVSS
8.8
Base score, 0 to 10
Highest EPSS
0.0257
85th percentile

Priority of the 15 CVEs

Patch now 0 Urgent 0 High 5 Routine 10

Fixed package versions

ProductReleaseFixed in
firefoxUbuntu 18.04.6 LTS (bionic)83.0+build2-0ubuntu0.18.04.2

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2020-26960 Firefox ESR and 2 others: If the Compact() method was called on an nsTArray, the array could have been reallocated without updating…8.8 0.0156 None reported
High CVE-2020-26968 Firefox ESR and 2 others: Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4.8.8 0.0151 None reported
High CVE-2020-26959 Firefox ESR and 2 others: During browser shutdown, reference decrementing could have occured on a previously freed object, resulting…8.8 0.0130 None reported
High CVE-2020-26969 Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 82.8.8 0.0122 None reported
High CVE-2020-26952 Firefox ESR and 1 other: Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption…8.8 0.0116 None reported
Routine CVE-2020-16012 Firefox ESR and 1 other: Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote…4.3 0.0257 None reported
Routine CVE-2020-26958 Firefox ESR and 2 others: Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted…6.1 0.0136 None reported
Routine CVE-2020-26953 Firefox ESR and 2 others: It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus…4.3 0.0129 None reported
Routine CVE-2020-26965 Firefox ESR and 2 others: Some websites have a feature "Show Password" where clicking a button will change a password field into…6.5 0.0126 None reported
Routine CVE-2020-26956 Firefox ESR and 2 others: In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and…6.1 0.0123 None reported
Routine CVE-2020-26961 Firefox ESR and 2 others: When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses…6.5 0.0117 None reported
Routine CVE-2020-26951 Firefox ESR and 2 others: A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even…6.1 0.0105 None reported
Routine CVE-2020-26967 Firefox ESR and 1 other: When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox…6.5 0.0085 None reported
Routine CVE-2020-26963 Firefox ESR and 1 other: Repeated calls to the history and location interfaces could have been used to hang the browser.4.3 0.0085 None reported
Routine CVE-2020-26962 Firefox ESR and 1 other: Cross-origin iframes that contained a login form could have been recognized by the login autofill service,…6.1 0.0070 None reported
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