Buffer overflow in Mozilla Firefox
CVE-2018-18498
A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Vulnerability class: Integer 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: 0.040 (90.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- 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 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.6
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2018-29/ (Vendor Advisory)
- lists.debian.org/debian-lts-announce/2018/12/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3833 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3831 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2019/dsa-4362 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201903-04 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3844-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/106168 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2019:0159 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2018-31/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-18498?
- CVE-2018-18498 is a critical-severity vulnerability in Mozilla Firefox, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2019-02-28.
- How severe is CVE-2018-18498?
- Critical severity. CVSS v3 base score is 9.8 out of 10.