Buffer overflow in Mozilla Firefox
CVE-2017-5448
An out-of-bounds write in "ClearKeyDecryptor" while decrypting some Clearkey-encrypted media content. The "ClearKeyDecryptor" code runs within the Gecko Media Plugin (GMP) sandbox. If a second mechanism is found to escape the sandbox, this vulnerability allows for the writing of arbitrary data within memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Debian Linux — versions 7.0
- Red Hat Enterprise Linux — versions 6.0, 7.0
- 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 7.3, 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.3, 7.4, 7.5
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2017:1106 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2017-12/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-11/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-10/ (Vendor Advisory)
- www.securityfocus.com/bid/97940 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2017/dsa-3831 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1038320 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:1104 (vendor-advisory, Third Party Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-5448?
- CVE-2017-5448 is a high-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Write. CVSS score: 8.6/10. Published 2018-06-11.
- How severe is CVE-2017-5448?
- High severity. CVSS v3 base score is 8.6 out of 10.