CVE-2017-7826

high-risk

Published 2018-06-11

Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.

Do I need to act?

2.4% 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 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (16)

Debian Linux

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Workstation

Ubuntu Linux

Firefox

Thunderbird

Affected Vendors

Debian Redhat Mozilla Canonical

References (28)

Third Party Advisory http://www.securityfocus.com/bid/101832

Third Party Advisory http://www.securitytracker.com/id/1039803

Third Party Advisory https://access.redhat.com/errata/RHSA-2017:3247

Third Party Advisory https://access.redhat.com/errata/RHSA-2017:3372

Issue Tracking https://bugzilla.mozilla.org/buglist.cgi?bug_id=1394530%2C1369561%2C1411458%2C14...

Third Party Advisory https://lists.debian.org/debian-lts-announce/2017/11/msg00018.html

Third Party Advisory https://lists.debian.org/debian-lts-announce/2017/12/msg00001.html

Third Party Advisory https://usn.ubuntu.com/3688-1/

Third Party Advisory https://www.debian.org/security/2017/dsa-4035

Third Party Advisory https://www.debian.org/security/2017/dsa-4061

Third Party Advisory https://www.debian.org/security/2017/dsa-4075

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-24/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-25/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-26/

Third Party Advisory http://www.securityfocus.com/bid/101832

Third Party Advisory http://www.securitytracker.com/id/1039803

Third Party Advisory https://access.redhat.com/errata/RHSA-2017:3247

Third Party Advisory https://access.redhat.com/errata/RHSA-2017:3372

Issue Tracking https://bugzilla.mozilla.org/buglist.cgi?bug_id=1394530%2C1369561%2C1411458%2C14...

Third Party Advisory https://lists.debian.org/debian-lts-announce/2017/11/msg00018.html

and 8 more references

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high-risk

Severity 32/34 · Critical

Exploitability 5/34 · Minimal

Exposure 18/34 · Moderate