CVE-2020-6806 — Out-of-bounds Read in Mozilla Firefox
Severity
8.8HIGHNVD
OSV6.5
EPSS
2.6%
top 14.33%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 25
Latest updateMay 24
Description
By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
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
Also affects: Ubuntu Linux 16.04, 18.04, 19.10
🔴Vulnerability Details
6GHSA▶
GHSA-gxgj-q4fv-gx77: By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution↗2022-05-24
OSV▶
CVE-2020-6806: By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution↗2020-03-25
CVEList▶
CVE-2020-6806: By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution↗2020-03-25
📋Vendor Advisories
8Red Hat
▶
Debian▶
CVE-2020-6806: firefox - By carefully crafting promise resolutions, it was possible to cause an out-of-bo...↗2020
💬Community
1Bugzilla▶
CVE-2020-6806 Mozilla: BodyStream::OnInputStreamReady was missing protections against state confusion↗2020-03-10