Buffer overflow in Mozilla Firefox
CVE-2017-7779
Memory safety bugs were reported in Firefox 54, Firefox ESR 52.2, and Thunderbird 52.2. 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 Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.4, 7.5
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2017-19/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-20/ (Vendor Advisory)
- www.debian.org/security/2017/dsa-3968 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/100201 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-18/ (Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:2456 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2534 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1039124 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/buglist.cgi (Permissions Required, Third Party Advisory, Issue Tracking)
- security.gentoo.org/glsa/201803-14 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7779?
- CVE-2017-7779 is a critical-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-06-11.
- How severe is CVE-2017-7779?
- Critical severity. CVSS v3 base score is 9.8 out of 10.