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Fencer Vulns
critical 9.8

CVE-2017-5428 json

An integer overflow in "createImageBitmap()" was reported through the Pwn2Own contest.

published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14532

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

An integer overflow in "createImageBitmap()" was reported through the Pwn2Own contest. The fix for this vulnerability disables the experimental extensions to the "createImageBitmap" API. This function runs in the content sandbox, requiring a second vulnerability to compromise a user's computer. This vulnerability affects Firefox ESR < 52.0.1 and Firefox < 52.0.1.

Patch / fix

  • Mozilla Firefox ESR 52.0.1
  • Mozilla Firefox 52.0.1
  • firefox Ubuntu 14.04 LTS 52.0.1+build2-0ubuntu0.14.04.1
  • firefox Ubuntu 16.04 LTS 52.0.1+build2-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-5428

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • firefox RHEL 7 52.0-5.el7_3

red hat advisories RHSA-2017:0558

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 92.0-1.2

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1

  • firefox Arch Linux 52.0.1-1

arch linux advisories AVG-219

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-5428 updated cvss 9.8

Mozilla: integer overflow in createImageBitmap() (MFSA 2017-08)

  • Red Hat Enterprise Linux Client (v. 7) firefox 52.0-5.el7_3 Red Hat Enterprise Linux Client Optional (v. 7) firefox 52.0-5.el7_3 Red Hat Enterprise Linux Server (v. 7) firefox 52.0-5.el7_3 Red Hat Enterprise Linux Server Optional (v. 7) firefox 52.0-5.el7_3 Red Hat Enterprise Linux Workstation (v. 7) firefox 52.0-5.el7_3 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 52.0-5.el7_3
    fixed: vendor fix RHSA-2017:0558
  • Red Hat Enterprise Linux 5 firefox, thunderbird Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 thunderbird
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.18% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1348168 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Mozilla Firefox ESR
  • Mozilla Firefox

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.