CVE-2020-15673
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 (1.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
- 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
- 1.96% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · debian/debian linux · opensuse/leap
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlMailing List, Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1648493%2C1660800Broken Link, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202010-02Third Party Advisory
- https://www.debian.org/security/2020/dsa-4770Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlMailing List, Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1648493%2C1660800Broken Link, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202010-02Third Party Advisory
- https://www.debian.org/security/2020/dsa-4770Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.