CVE-2020-15676

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1646140

https://lists.debian.org/debian-lts-announce/2020/10/msg00020.html

https://security.gentoo.org/glsa/202010-02

https://www.debian.org/security/2020/dsa-4770

https://www.mozilla.org/security/advisories/mfsa2020-42/

https://www.mozilla.org/security/advisories/mfsa2020-43/

https://www.mozilla.org/security/advisories/mfsa2020-44/

Details

Source: MITRE

Published: 2020-10-01

Updated: 2020-11-02

Type: CWE-79

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Impact Score: 2.7

Exploitability Score: 2.8

Severity: MEDIUM

Tenable Plugins

View all (45 total)

IDNameProductFamilySeverity
150560SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2020:14502-1)NessusSuSE Local Security Checks
high
149335NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0025)NessusNewStart CGSL Local Security Checks
high
147407NewStart CGSL MAIN 4.06 : firefox Multiple Vulnerabilities (NS-SA-2021-0004)NessusNewStart CGSL Local Security Checks
critical
147399NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2021-0018)NessusNewStart CGSL Local Security Checks
high
147352NewStart CGSL MAIN 6.02 : firefox Multiple Vulnerabilities (NS-SA-2021-0065)NessusNewStart CGSL Local Security Checks
high
147312NewStart CGSL MAIN 4.06 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0002)NessusNewStart CGSL Local Security Checks
critical
147286NewStart CGSL MAIN 6.02 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0081)NessusNewStart CGSL Local Security Checks
high
145845CentOS 8 : thunderbird (CESA-2020:4155)NessusCentOS Local Security Checks
high
143829SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2020:2759-1)NessusSuSE Local Security Checks
high
143808SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2020:2747-1)NessusSuSE Local Security Checks
high
143647SUSE SLED15 / SLES15 Security Update : MozillaThunderbird / mozilla-nspr (SUSE-SU-2020:3091-1)NessusSuSE Local Security Checks
critical
143586Amazon Linux 2 : thunderbird (ALAS-2020-1572)NessusAmazon Linux Local Security Checks
high
143210Oracle Linux 6 : thunderbird (ELSA-2020-4158)NessusOracle Linux Local Security Checks
high
143085RHEL 7 : firefox (RHSA-2020:4080)NessusRed Hat Local Security Checks
high
143070RHEL 7 : thunderbird (RHSA-2020:4163)NessusRed Hat Local Security Checks
high
142897Oracle Linux 6 : firefox (ELSA-2020-3835)NessusOracle Linux Local Security Checks
high
142196openSUSE Security Update : MozillaThunderbird and mozilla-nspr (openSUSE-2020-1785)NessusSuSE Local Security Checks
critical
142165openSUSE Security Update : MozillaThunderbird and mozilla-nspr (openSUSE-2020-1780)NessusSuSE Local Security Checks
critical
141760Scientific Linux Security Update : firefox on SL7.x x86_64 (20201001)NessusScientific Linux Local Security Checks
high
141656Scientific Linux Security Update : thunderbird on SL7.x x86_64 (20201001)NessusScientific Linux Local Security Checks
high
141531GLSA-202010-02 : Mozilla Firefox, Mozilla Thunderbird: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
141508Debian DLA-2408-1 : thunderbird security updateNessusDebian Local Security Checks
high
141414Oracle Linux 7 : firefox (ELSA-2020-4080)NessusOracle Linux Local Security Checks
high
141413Oracle Linux 7 : thunderbird (ELSA-2020-4163)NessusOracle Linux Local Security Checks
high
141305RHEL 8 : thunderbird (RHSA-2020:4155)NessusRed Hat Local Security Checks
high
141243Debian DSA-4770-1 : thunderbird - security updateNessusDebian Local Security Checks
high
141156openSUSE Security Update : MozillaFirefox (openSUSE-2020-1555)NessusSuSE Local Security Checks
high
141150Scientific Linux Security Update : thunderbird on SL6.x i386/x86_64 (20201001)NessusScientific Linux Local Security Checks
high
141130Oracle Linux 8 : thunderbird (ELSA-2020-4155)NessusOracle Linux Local Security Checks
high
141127RHEL 8 : thunderbird (RHSA-2020:4156)NessusRed Hat Local Security Checks
high
141126RHEL 6 : thunderbird (RHSA-2020:4158)NessusRed Hat Local Security Checks
high
141124RHEL 8 : thunderbird (RHSA-2020:4157)NessusRed Hat Local Security Checks
high
141104Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20200924)NessusScientific Linux Local Security Checks
high
141081openSUSE Security Update : MozillaFirefox (openSUSE-2020-1574)NessusSuSE Local Security Checks
high
140936Debian DSA-4768-1 : firefox-esr - security updateNessusDebian Local Security Checks
high
140925Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-4546-1)NessusUbuntu Local Security Checks
high
140783Oracle Linux 8 : firefox (ELSA-2020-3832)NessusOracle Linux Local Security Checks
high
140781RHEL 8 : firefox (RHSA-2020:3834)NessusRed Hat Local Security Checks
high
140780RHEL 8 : firefox (RHSA-2020:3832)NessusRed Hat Local Security Checks
high
140779RHEL 6 : firefox (RHSA-2020:3835)NessusRed Hat Local Security Checks
high
140778RHEL 8 : firefox (RHSA-2020:3833)NessusRed Hat Local Security Checks
high
140734Mozilla Firefox ESR < 78.3NessusWindows
high
140733Mozilla Firefox ESR < 78.3NessusMacOS X Local Security Checks
high
140732Mozilla Firefox < 81.0NessusWindows
high
140731Mozilla Firefox < 81.0NessusMacOS X Local Security Checks
high