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
EPSS: 0.024 (82.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
- Debian Debian_linux — versions 8.0, 9.0
- Redhat Enterprise_linux — versions 5.0, 6.0, 7.0
- Redhat Enterprise_linux_desktop — versions 5.0, 6.0, 7.0
- Redhat Enterprise_linux_server — versions 5.0, 6.0, 7.0
- Redhat Enterprise_linux_server_aus — versions 7.3, 7.4
- Redhat Enterprise_linux_server_eus — versions 7.3, 7.4, 7.5
Weakness classification (CWE)
References
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Exploit, Issue Tracking, Vendor Advisory)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@mozilla.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@mozilla.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
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.