CVE-2020-15659
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.40% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · opensuse/leap · canonical/ubuntu linux
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.htmlMailing List, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing List, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlMailing List, Patch, Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C1644839%2C1645835%2C1646006%2C1646787%2C1649347%2C1650811%2C1651678Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/Patch, Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-31/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-35/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.htmlMailing List, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing List, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlMailing List, Patch, Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C1644839%2C1645835%2C1646006%2C1646787%2C1649347%2C1650811%2C1651678Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/Patch, Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-31/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-35/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.