CVE-2020-6822 — Out-of-bounds Write in Mozilla Firefox
Severity
8.8HIGHNVD
OSV7.5OSV6.5
EPSS
0.8%
top 25.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 24
Latest updateMay 24
Description
On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9
Affected Packages9 packages
🔴Vulnerability Details
6GHSA▶
GHSA-v2mh-4gcf-6ghr: On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData↗2022-05-24
OSV▶
CVE-2020-6822: On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData↗2020-04-24
CVEList▶
CVE-2020-6822: On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData↗2020-04-24
📋Vendor Advisories
8Debian▶
CVE-2020-6822: firefox - On 32-bit builds, an out of bounds write could have occurred when processing an ...↗2020
💬Community
1Bugzilla
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