CVE-2020-15676: XSS
First published: Tue Sep 22 2020(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/firefox | 118.0.2-1 | |
| debian/firefox-esr | 91.12.0esr-1~deb10u1 115.3.1esr-1~deb10u1 102.15.0esr-1~deb11u1 115.3.1esr-1~deb11u1 102.15.1esr-1~deb12u1 115.3.0esr-1~deb12u1 115.3.0esr-1 | |
| debian/thunderbird | 1:91.12.0-1~deb10u1 1:115.3.1-1~deb10u1 1:102.13.1-1~deb11u1 1:115.3.1-1~deb11u1 1:102.15.1-1~deb12u1 1:115.3.1-1~deb12u1 1:115.3.1-1 | |
| Thunderbird | <78.3 | 78.3 |
| Firefox | <81.0 | |
| Firefox ESR | <78.3 | |
| Thunderbird | <78.3 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| SUSE Linux | =15.1 | |
| SUSE Linux | =15.2 | |
| Firefox | <81 | 81 |
| Firefox ESR | <78.3 | 78.3 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1646140
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-44/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-42/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-43/
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html
- 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/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-42/#CVE-2020-15676
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-43/#CVE-2020-15676
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-44/#CVE-2020-15676
- https://security-tracker.debian.org/tracker/CVE-2020-15676
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2020-15676?
CVE-2020-15676 is classified as a high severity vulnerability due to potential arbitrary code execution.
How do I fix CVE-2020-15676?
To fix CVE-2020-15676, update Firefox to version 118.0.2-1 or later, or update Firefox ESR and Thunderbird as specified in the advisory.
Which versions of Firefox are affected by CVE-2020-15676?
Versions of Firefox prior to 118.0.2-1 are affected by CVE-2020-15676.
Is Firefox ESR affected by CVE-2020-15676?
Yes, specific versions of Firefox ESR including those prior to and including 78.3 are affected by CVE-2020-15676.
Can CVE-2020-15676 be exploited in contenteditable elements?
Yes, CVE-2020-15676 can be exploited when pasting attacker-controlled data into contenteditable elements.
- collector/security-tracker-debian
- agent/type
- agent/first-publish-date
- agent/author
- agent/severity
- agent/references
- agent/weakness
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
- agent/source
- collector/mozilla-advisory
- agent/software-canonical-lookup-request
- source/Mozilla
- agent/software-canonical-lookup
- collector/nvd-index
- agent/tags
- agent/softwarecombine
- package-manager/debian
- vendor/mozilla
- canonical/thunderbird
- canonical/firefox
- canonical/firefox esr
- vendor/debian
- canonical/debian
- version/debian/9.0
- version/debian/10.0
- vendor/opensuse
- canonical/suse linux
- version/suse linux/15.1
- version/suse linux/15.2