Information disclosure in Mozilla Firefox
CVE-2017-7787
Same-origin policy protections can be bypassed on pages with embedded iframes during page reloads, allowing the iframes to access content on the top level page, leading to information disclosure. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.023 (83.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.3, 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.3, 7.4, 7.5
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2017-19/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-20/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- www.debian.org/security/2017/dsa-3968 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2017-18/ (Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:2456 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/100234 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:2534 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1039124 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201803-14 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7787?
- CVE-2017-7787 is a high-severity vulnerability in Mozilla Firefox, classified under Information Disclosure. CVSS score: 7.5/10. Published 2018-06-11.
- How severe is CVE-2017-7787?
- High severity. CVSS v3 base score is 7.5 out of 10.