Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 79.0 |
| Mozilla | Firefox Esr | < 68.11 |
| Mozilla | Thunderbird | < 68.11 |
| Opensuse | Leap | 15.1 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.htmlMailing ListPatchThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing ListPatchThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlMailing ListPatchThird Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C16Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/4443-1/PatchThird 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 ListPatchThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing ListPatchThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlMailing ListPatchThird Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C16Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/4443-1/PatchThird Party Advisory
FAQ
What is CVE-2020-15659?
CVE-2020-15659 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...
How severe is CVE-2020-15659?
CVE-2020-15659 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15659?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Opensuse Leap, Canonical Ubuntu Linux.