Vulnerability · Published Aug 10, 2020 · Assigned by mozilla
CVE-2020-15659
High 8.8
In plain English
A high-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 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.21 | firefox | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.22 | firefox | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.23 | firefox | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.20 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.21 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.22 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.23 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.21 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.22 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.23 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Alpine:v3.24 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15659 |
| Debian:12 | firefox-esr | 68.11.0esr-1 | DEBIAN-CVE-2020-15659 |
| Debian:13 | firefox-esr | 68.11.0esr-1 | DEBIAN-CVE-2020-15659 |
| Debian:14 | firefox-esr | 68.11.0esr-1 | DEBIAN-CVE-2020-15659 |
| Debian:12 | thunderbird | 1:68.11.0-1 | DEBIAN-CVE-2020-15659 |
| Debian:13 | thunderbird | 1:68.11.0-1 | DEBIAN-CVE-2020-15659 |
| Debian:14 | thunderbird | 1:68.11.0-1 | DEBIAN-CVE-2020-15659 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 79 |
| Mozilla | Firefox ESR | unspecified – before 68.11unspecified – before 78.1 |
| Mozilla | Thunderbird | unspecified – before 68.11unspecified – before 78.1 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-30/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-35/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-32/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-33/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-31/ x_refsource_MISC
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C1644839%2C1645835%2C1646006%2C1646787%2C1649347%2C1650811%2C1651678 x_refsource_MISC
- openSUSE-SU-2020:1179 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1189 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1205 vendor-advisory, x_refsource_SUSE
- USN-4443-1 vendor-advisory, x_refsource_UBUNTU