Vulnerability Description
JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 79.0 |
| Mozilla | Firefox Esr | < 78.1 |
| Mozilla | Thunderbird | < 78.1 |
| Opensuse | Leap | 15.2 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1647293Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/4443-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1647293Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/4443-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
FAQ
What is CVE-2020-15656?
CVE-2020-15656 is a vulnerability with a CVSS score of 8.8 (HIGH). JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only m...
How severe is CVE-2020-15656?
CVE-2020-15656 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-2020-15656?
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.