CVE-2020-6821

MEDIUM

Description

When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1625404

https://usn.ubuntu.com/4335-1/

https://www.mozilla.org/security/advisories/mfsa2020-12/

https://www.mozilla.org/security/advisories/mfsa2020-13/

https://www.mozilla.org/security/advisories/mfsa2020-14/

Details

Source: MITRE

Published: 2020-04-24

Updated: 2020-05-01

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (49 total)

IDNameProductFamilySeverity
147407NewStart CGSL MAIN 4.06 : firefox Multiple Vulnerabilities (NS-SA-2021-0004)NessusNewStart CGSL Local Security Checks
critical
147312NewStart CGSL MAIN 4.06 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0002)NessusNewStart CGSL Local Security Checks
critical
145974CentOS 8 : firefox (CESA-2020:1406)NessusCentOS Local Security Checks
high
145858CentOS 8 : thunderbird (CESA-2020:1495)NessusCentOS Local Security Checks
high
143979NewStart CGSL CORE 5.05 / MAIN 5.05 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0093)NessusNewStart CGSL Local Security Checks
critical
143948NewStart CGSL CORE 5.05 / MAIN 5.05 : firefox Multiple Vulnerabilities (NS-SA-2020-0097)NessusNewStart CGSL Local Security Checks
critical
143928NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2020-0064)NessusNewStart CGSL Local Security Checks
critical
143912NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0074)NessusNewStart CGSL Local Security Checks
critical
138776NewStart CGSL MAIN 6.01 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0036)NessusNewStart CGSL Local Security Checks
critical
137246RHEL 8 : firefox (RHSA-2020:1406)NessusRed Hat Local Security Checks
high
137245RHEL 8 : firefox (RHSA-2020:1404)NessusRed Hat Local Security Checks
high
136752Amazon Linux 2 : thunderbird (ALAS-2020-1429)NessusAmazon Linux Local Security Checks
critical
136194CentOS 7 : thunderbird (CESA-2020:1489)NessusCentOS Local Security Checks
high
136017CentOS 6 : thunderbird (CESA-2020:1488)NessusCentOS Local Security Checks
high
136016CentOS 6 : firefox (CESA-2020:1429)NessusCentOS Local Security Checks
high
136007openSUSE Security Update : MozillaThunderbird (openSUSE-2020-544)NessusSuSE Local Security Checks
high
135947GLSA-202004-11 : Mozilla Firefox: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
135896Ubuntu 16.04 LTS : Thunderbird vulnerabilities (USN-4335-1)NessusUbuntu Local Security Checks
high
135845Scientific Linux Security Update : thunderbird on SL7.x x86_64 (20200416)NessusScientific Linux Local Security Checks
high
135844Scientific Linux Security Update : firefox on SL7.x x86_64 (20200409)NessusScientific Linux Local Security Checks
high
135747Oracle Linux 8 : thunderbird (ELSA-2020-1495)NessusOracle Linux Local Security Checks
high
135716Scientific Linux Security Update : thunderbird on SL6.x i386/x86_64 (20200416)NessusScientific Linux Local Security Checks
high
135715Oracle Linux 7 : thunderbird (ELSA-2020-1489)NessusOracle Linux Local Security Checks
high
135692RHEL 8 : thunderbird (RHSA-2020:1495)NessusRed Hat Local Security Checks
high
135691RHEL 8 : thunderbird (RHSA-2020:1496)NessusRed Hat Local Security Checks
high
135687RHEL 6 : thunderbird (RHSA-2020:1488)NessusRed Hat Local Security Checks
high
135684RHEL 7 : thunderbird (RHSA-2020:1489)NessusRed Hat Local Security Checks
high
135578openSUSE Security Update : MozillaThunderbird (openSUSE-2020-520)NessusSuSE Local Security Checks
high
135575Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20200414)NessusScientific Linux Local Security Checks
high
135495Debian DLA-2172-1 : thunderbird security updateNessusDebian Local Security Checks
high
135455Ubuntu 18.04 LTS / 19.10 : Thunderbird vulnerabilities (USN-4328-1)NessusUbuntu Local Security Checks
high
135446openSUSE Security Update : MozillaFirefox (openSUSE-2020-493)NessusSuSE Local Security Checks
high
135431Oracle Linux 7 : firefox (ELSA-2020-1420)NessusOracle Linux Local Security Checks
high
135417Debian DSA-4656-1 : thunderbird - security updateNessusDebian Local Security Checks
high
135415RHEL 6 : firefox (RHSA-2020:1429)NessusRed Hat Local Security Checks
high
135413Mozilla Thunderbird < 68.7.0NessusWindows
high
135412Mozilla Thunderbird < 68.7.0NessusMacOS X Local Security Checks
high
135397SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2020:0978-1)NessusSuSE Local Security Checks
high
135396SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2020:0971-1)NessusSuSE Local Security Checks
high
135380Oracle Linux 8 : firefox (ELSA-2020-1406)NessusOracle Linux Local Security Checks
high
135366Debian DSA-4655-1 : firefox-esr - security updateNessusDebian Local Security Checks
high
135363Debian DLA-2170-1 : firefox-esr security updateNessusDebian Local Security Checks
high
135288RHEL 7 : firefox (RHSA-2020:1420)NessusRed Hat Local Security Checks
high
135284Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : firefox vulnerabilities (USN-4323-1)NessusUbuntu Local Security Checks
high
135280Slackware 14.2 / current : mozilla-firefox (SSA:2020-098-01)NessusSlackware Local Security Checks
high
135276Mozilla Firefox < 75.0 (mfsa2020-12)NessusWindows
high
135275Mozilla Firefox < 75.0 Multiple Vulnerabilities (mfsa2020-12)NessusMacOS X Local Security Checks
high
135274Mozilla Firefox ESR < 68.7 Multiple Vulnerabilities (mfsa2020-13)NessusWindows
high
135273Mozilla Firefox ESR < 68.7 Multiple Vulnerabilities (mfsa2020-13)NessusMacOS X Local Security Checks
high