Vulnerability · Published Jul 9, 2020 · Assigned by mozilla
CVE-2020-12422
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 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.9%top 19.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.21 | firefox | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.22 | firefox | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.23 | firefox | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.21 | librewolf | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.22 | librewolf | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.23 | librewolf | 78.0-r0 | ALPINE-CVE-2020-12422 |
| Alpine:v3.24 | librewolf | 78.0-r0 | ALPINE-CVE-2020-12422 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2020-24/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450353 x_refsource_MISC
- openSUSE-SU-2020:0983 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1017 vendor-advisory, x_refsource_SUSE
- GLSA-202007-10 vendor-advisory, x_refsource_GENTOO