CVE-2019-11763medium
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
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1584216
https://security.gentoo.org/glsa/202003-10
https://www.mozilla.org/security/advisories/mfsa2019-33/
Details
Source: MITRE
Published: 2020-01-08
Updated: 2020-03-14
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
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 147407 | NewStart CGSL MAIN 4.06 : firefox Multiple Vulnerabilities (NS-SA-2021-0004) | Nessus | NewStart CGSL Local Security Checks | critical |
| 147312 | NewStart CGSL MAIN 4.06 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0002) | Nessus | NewStart CGSL Local Security Checks | critical |
| 145641 | CentOS 8 : thunderbird (CESA-2019:3237) | Nessus | CentOS Local Security Checks | high |
| 145572 | CentOS 8 : firefox (CESA-2019:3196) | Nessus | CentOS Local Security Checks | high |
| 135896 | Ubuntu 16.04 LTS : Thunderbird vulnerabilities (USN-4335-1) | Nessus | Ubuntu Local Security Checks | critical |
| 134587 | GLSA-202003-10 : Mozilla Thunderbird: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | critical |
| 134411 | NewStart CGSL MAIN 4.05 : firefox Multiple Vulnerabilities (NS-SA-2020-0017) | Nessus | NewStart CGSL Local Security Checks | critical |
| 134410 | NewStart CGSL MAIN 4.05 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0022) | Nessus | NewStart CGSL Local Security Checks | critical |
| 133080 | NewStart CGSL CORE 5.05 / MAIN 5.05 : firefox Multiple Vulnerabilities (NS-SA-2020-0004) | Nessus | NewStart CGSL Local Security Checks | high |
| 133071 | NewStart CGSL CORE 5.05 / MAIN 5.05 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0003) | Nessus | NewStart CGSL Local Security Checks | high |
| 132264 | Amazon Linux 2 : thunderbird (ALAS-2019-1376) | Nessus | Amazon Linux Local Security Checks | high |
| 132011 | Ubuntu 18.04 LTS / 19.10 : Thunderbird regression (USN-4202-2) | Nessus | Ubuntu Local Security Checks | high |
| 131409 | NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2019-0216) | Nessus | NewStart CGSL Local Security Checks | high |
| 131405 | NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2019-0215) | Nessus | NewStart CGSL Local Security Checks | high |
| 131139 | Debian DSA-4571-1 : thunderbird - security update | Nessus | Debian Local Security Checks | high |
| 131136 | Debian DLA-1997-1 : thunderbird security update | Nessus | Debian Local Security Checks | high |
| 130977 | CentOS 6 : thunderbird (CESA-2019:3756) | Nessus | CentOS Local Security Checks | high |
| 130937 | openSUSE Security Update : MozillaThunderbird (openSUSE-2019-2464) | Nessus | SuSE Local Security Checks | high |
| 130936 | openSUSE Security Update : MozillaThunderbird (openSUSE-2019-2452) | Nessus | SuSE Local Security Checks | high |
| 130890 | openSUSE Security Update : MozillaFirefox / MozillaFirefox-branding-SLE (openSUSE-2019-2459) | Nessus | SuSE Local Security Checks | high |
| 130885 | openSUSE Security Update : MozillaFirefox / MozillaFirefox-branding-SLE (openSUSE-2019-2451) | Nessus | SuSE Local Security Checks | high |
| 130772 | Debian DLA-1987-1 : firefox-esr security update | Nessus | Debian Local Security Checks | high |
| 130750 | Scientific Linux Security Update : thunderbird on SL6.x i386/x86_64 (20191106) | Nessus | Scientific Linux Local Security Checks | high |
| 130742 | RHEL 6 : thunderbird (RHSA-2019:3756) | Nessus | Red Hat Local Security Checks | high |
| 130498 | Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20191031) | Nessus | Scientific Linux Local Security Checks | high |
| 130472 | CentOS 6 : firefox (CESA-2019:3281) | Nessus | CentOS Local Security Checks | high |
| 130450 | SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2019:2872-1) | Nessus | SuSE Local Security Checks | critical |
| 130449 | SUSE SLED15 / SLES15 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE (SUSE-SU-2019:2871-1) | Nessus | SuSE Local Security Checks | high |
| 130444 | RHEL 6 : firefox (RHSA-2019:3281) | Nessus | Red Hat Local Security Checks | high |
| 130436 | CentOS 7 : thunderbird (CESA-2019:3210) | Nessus | CentOS Local Security Checks | high |
| 130434 | CentOS 7 : firefox (CESA-2019:3193) | Nessus | CentOS Local Security Checks | high |
| 130415 | Oracle Linux 8 : thunderbird (ELSA-2019-3237) | Nessus | Oracle Linux Local Security Checks | high |
| 130414 | Oracle Linux 7 : thunderbird (ELSA-2019-3210) | Nessus | Oracle Linux Local Security Checks | high |
| 130386 | Scientific Linux Security Update : thunderbird on SL7.x x86_64 (20191029) | Nessus | Scientific Linux Local Security Checks | high |
| 130382 | RHEL 8 : thunderbird (RHSA-2019:3237) | Nessus | Red Hat Local Security Checks | high |
| 130371 | RHEL 7 : thunderbird (RHSA-2019:3210) | Nessus | Red Hat Local Security Checks | high |
| 130365 | Mozilla Thunderbird < 68.2 | Nessus | Windows | high |
| 130364 | Mozilla Thunderbird < 68.2 | Nessus | MacOS X Local Security Checks | high |
| 130288 | Debian DSA-4549-1 : firefox-esr - security update | Nessus | Debian Local Security Checks | high |
| 130248 | RHEL 8 : firefox (RHSA-2019:3196) | Nessus | Red Hat Local Security Checks | high |
| 130247 | Oracle Linux 8 : firefox (ELSA-2019-3196) | Nessus | Oracle Linux Local Security Checks | high |
| 130200 | Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : Firefox vulnerabilities (USN-4165-1) | Nessus | Ubuntu Local Security Checks | high |
| 130192 | Scientific Linux Security Update : firefox on SL7.x x86_64 (20191023) | Nessus | Scientific Linux Local Security Checks | high |
| 130190 | RHEL 7 : firefox (RHSA-2019:3193) | Nessus | Red Hat Local Security Checks | high |
| 130184 | Oracle Linux 7 : firefox (ELSA-2019-3193) | Nessus | Oracle Linux Local Security Checks | high |
| 130172 | Mozilla Firefox ESR 68.x < 68.2 Multiple vulnerabilities | Nessus | Windows | high |
| 130171 | Mozilla Firefox ESR 68.x < 68.2 Multiple Vulnerabilities | Nessus | MacOS X Local Security Checks | high |
| 130170 | Mozilla Firefox < 70.0 Multiple Vulnerabilities | Nessus | Windows | high |
| 130169 | Mozilla Firefox < 70.0 Multiple Vulnerabilities | Nessus | MacOS X Local Security Checks | high |
| 130158 | Slackware 14.2 / current : mozilla-firefox (SSA:2019-295-01) | Nessus | Slackware Local Security Checks | high |