Vulnerability · Published Mar 2, 2020 · Assigned by mozilla
CVE-2020-6798
Medium 6.1
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox-esr | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.21 | firefox-esr | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.22 | firefox-esr | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.23 | firefox-esr | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.20 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.21 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.22 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Alpine:v3.23 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6798 |
| Debian:12 | firefox-esr | 68.5.0esr-1 | DEBIAN-CVE-2020-6798 |
| Debian:13 | firefox-esr | 68.5.0esr-1 | DEBIAN-CVE-2020-6798 |
| Debian:14 | firefox-esr | 68.5.0esr-1 | DEBIAN-CVE-2020-6798 |
| Debian:12 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6798 |
| Debian:13 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6798 |
| Debian:14 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6798 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 68.5 |
| Mozilla | Firefox | unspecified – before 73unspecified – before ESR68.5 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-05/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-06/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-07/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1602944 x_refsource_MISC
- USN-4278-2 vendor-advisory, x_refsource_UBUNTU
- GLSA-202003-02 vendor-advisory, x_refsource_GENTOO
- GLSA-202003-10 vendor-advisory, x_refsource_GENTOO
- USN-4328-1 vendor-advisory, x_refsource_UBUNTU
- USN-4335-1 vendor-advisory, x_refsource_UBUNTU