Vulnerability · Published Mar 25, 2020 · Assigned by mozilla
CVE-2020-6814
Critical 9.8
In plain English
A critical-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 1.9% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.9%top 20.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.21 | firefox | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.22 | firefox | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.23 | firefox | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.20 | firefox-esr | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.21 | firefox-esr | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.22 | firefox-esr | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.23 | firefox-esr | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.21 | librewolf | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.22 | librewolf | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.23 | librewolf | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.24 | librewolf | 74.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.20 | thunderbird | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.21 | thunderbird | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.22 | thunderbird | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Alpine:v3.23 | thunderbird | 68.6.0-r0 | ALPINE-CVE-2020-6814 |
| Debian:12 | firefox-esr | 68.6.0esr-1 | DEBIAN-CVE-2020-6814 |
| Debian:13 | firefox-esr | 68.6.0esr-1 | DEBIAN-CVE-2020-6814 |
| Debian:14 | firefox-esr | 68.6.0esr-1 | DEBIAN-CVE-2020-6814 |
| Debian:12 | thunderbird | 1:68.6.0-1 | DEBIAN-CVE-2020-6814 |
| Debian:13 | thunderbird | 1:68.6.0-1 | DEBIAN-CVE-2020-6814 |
| Debian:14 | thunderbird | 1:68.6.0-1 | DEBIAN-CVE-2020-6814 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 68.6 |
| Mozilla | Firefox | unspecified – before 74unspecified – before ESR68.6 |
| Mozilla | Firefox ESR | unspecified – before 68.6 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-08/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-10/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-09/ x_refsource_MISC
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1592078%2C1604847%2C1608256%2C1612636%2C1614339 x_refsource_MISC
- USN-4328-1 vendor-advisory, x_refsource_UBUNTU
- USN-4335-1 vendor-advisory, x_refsource_UBUNTU