CVE-2020-6806
- Source
- https://cve.org/CVERecord?id=CVE-2020-6806
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-6806.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-6806
- Downstream
- Related
- Published
- 2020-03-25T22:15:12.373Z
- Modified
- 2026-03-10T23:21:31.634529Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://www.mozilla.org/security/advisories/mfsa2020-10/
- http://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.html
- https://usn.ubuntu.com/4328-1/
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-08/
- https://www.mozilla.org/security/advisories/mfsa2020-09/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1612308
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-6806.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "74.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "68.6.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "68.6.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "19.10"
}
]
}
]