Information disclosure in Mozilla Firefox
CVE-2017-5378
Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
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: 0.034 (88.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0
- 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
- Red Hat Enterprise Linux Workstation — versions 5.0, 6.0, 7.0
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2017-03/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-02/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- security.gentoo.org/glsa/201702-22 (vendor-advisory, Third Party Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
- www.debian.org/security/2017/dsa-3832 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201702-13 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2017/dsa-3771 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1037693 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-01/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-5378?
- CVE-2017-5378 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-2017-5378?
- High severity. CVSS v3 base score is 7.5 out of 10.