CVE-2020-6800

moderate-risk

Published 2020-03-02

Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. 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. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

Do I need to act?

1.2% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (6)

Firefox

Firefox Esr

Thunderbird

Ubuntu Linux

Affected Vendors

Mozilla Canonical

References (18)

Broken Link https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595786%2C1596706%2C1598543%2C16...

Third Party Advisory https://security.gentoo.org/glsa/202003-02

Third Party Advisory https://security.gentoo.org/glsa/202003-10

Third Party Advisory https://usn.ubuntu.com/4278-2/

Third Party Advisory https://usn.ubuntu.com/4328-1/

Third Party Advisory https://usn.ubuntu.com/4335-1/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-05/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-06/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-07/