Vulnerability · Published Oct 22, 2020 · Assigned by mozilla
CVE-2020-15683
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 2.7% (higher than 86% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.7%top 14.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.21 | firefox | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.22 | firefox | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.23 | firefox | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.20 | firefox-esr | 78.5.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.21 | firefox-esr | 78.5.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.22 | firefox-esr | 78.5.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.23 | firefox-esr | 78.5.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.21 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.22 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.23 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.24 | librewolf | 82.0-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.20 | thunderbird | 78.5.1-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.21 | thunderbird | 78.5.1-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.22 | thunderbird | 78.5.1-r0 | ALPINE-CVE-2020-15683 |
| Alpine:v3.23 | thunderbird | 78.5.1-r0 | ALPINE-CVE-2020-15683 |
| Debian:12 | firefox-esr | 78.4.0esr-1 | DEBIAN-CVE-2020-15683 |
| Debian:13 | firefox-esr | 78.4.0esr-1 | DEBIAN-CVE-2020-15683 |
| Debian:14 | firefox-esr | 78.4.0esr-1 | DEBIAN-CVE-2020-15683 |
| Debian:12 | thunderbird | 1:78.4.0-1 | DEBIAN-CVE-2020-15683 |
| Debian:13 | thunderbird | 1:78.4.0-1 | DEBIAN-CVE-2020-15683 |
| Debian:14 | thunderbird | 1:78.4.0-1 | DEBIAN-CVE-2020-15683 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 78.4 |
| Mozilla | Firefox | unspecified – before 82 |
| Mozilla | Thunderbird | unspecified – before 78.4 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-45/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-47/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-46/ x_refsource_MISC
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1576843%2C1656987%2C1660954%2C1662760%2C1663439%2C1666140 x_refsource_MISC
- openSUSE-SU-2020:1732 vendor-advisory, x_refsource_SUSE
- DSA-4780 vendor-advisory, x_refsource_DEBIAN
- openSUSE-SU-2020:1748 vendor-advisory, x_refsource_SUSE
- [debian-lts-announce] 20201027 [SECURITY] [DLA 2416-1] thunderbird security update mailing-list, x_refsource_MLIST
- GLSA-202010-08 vendor-advisory, x_refsource_GENTOO
- openSUSE-SU-2020:1780 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1785 vendor-advisory, x_refsource_SUSE