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Fencer Vulns
high 8.8

CVE-2017-7777 json

Use of uninitialized memory in Graphite2 library in Firefox before 54 in graphite2::GlyphCache::Loader::read_glyph function.

published 2019-04-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16752

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Use of uninitialized memory in Graphite2 library in Firefox before 54 in graphite2::GlyphCache::Loader::read_glyph function.

Patch / fix

  • mozilla firefox 54.0
  • sil graphite2 1.3.10
  • graphite2 Debian 14, Debian 13, Debian 12 1.3.10-1
  • firefox-esr Debian 14, Debian 13, Debian 12 52.2.0esr-1

debian advisories DEBIAN-CVE-2017-7777

  • firefox Ubuntu 14.04 LTS 54.0+build3-0ubuntu0.14.04.1
  • firefox Ubuntu 16.04 LTS 54.0+build3-0ubuntu0.16.04.1
  • graphite2 Ubuntu 14.04 LTS 1.3.10-0ubuntu0.14.04.1
  • graphite2 Ubuntu 16.04 LTS 1.3.10-0ubuntu0.16.04.1
  • thunderbird Ubuntu 14.04 LTS 1:52.2.1+build1-0ubuntu0.14.04.1
  • thunderbird Ubuntu 16.04 LTS 1:52.2.1+build1-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-7777

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

  • graphite2 RHEL 7 1.3.10-1.el7_3
  • thunderbird RHEL 6 52.2.0-1.el6_9
  • thunderbird RHEL 7 52.2.0-1.el7_3
  • firefox RHEL 6 52.2.0-1.el6_9
  • firefox RHEL 7 52.2.0-1.el7_3

red hat advisories RHSA-2017:1793RHSA-2017:1561RHSA-2017:1440

  • MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1
  • MozillaThunderbird Package Hub 12 52.2-36.1

opensuse advisories openSUSE-SU-2024:10601-1openSUSE-SU-2017:1579-1

  • firefox Arch Linux 54.0-1
  • thunderbird Arch Linux 52.2.0-1

arch linux advisories AVG-302AVG-303

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-2017-7777 updated cvss 8.8

graphite2: use of uninitialized memory "graphite2::GlyphCache::Loader::read_glyph"

  • Red Hat Enterprise Linux Client (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3, thunderbird 52.2.0-1.el7_3 Red Hat Enterprise Linux Client Optional (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3
    fixed: vendor fix RHSA-2017:1440
  • Red Hat Enterprise Linux ComputeNode (v. 7) graphite2 1.3.10-1.el7_3 Red Hat Enterprise Linux ComputeNode Optional (v. 7) graphite2 1.3.10-1.el7_3
    fixed: vendor fix RHSA-2017:1793
  • Red Hat Enterprise Linux Desktop (v. 6) firefox 52.2.0-1.el6_9, thunderbird 52.2.0-1.el6_9 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 52.2.0-1.el6_9 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 52.2.0-1.el6_9 Red Hat Enterprise Linux Server (v. 6) firefox 52.2.0-1.el6_9 Red Hat Enterprise Linux Server (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3 Red Hat Enterprise Linux Server Optional (v. 6) firefox 52.2.0-1.el6_9, thunderbird 52.2.0-1.el6_9
    +5 more products
    Red Hat Enterprise Linux Server Optional (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3, thunderbird 52.2.0-1.el7_3 Red Hat Enterprise Linux Workstation (v. 6) firefox 52.2.0-1.el6_9, thunderbird 52.2.0-1.el6_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3, thunderbird 52.2.0-1.el7_3 Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 52.2.0-1.el6_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 52.2.0-1.el7_3, graphite2 1.3.10-1.el7_3
    fixed: vendor fix RHSA-2017:1440

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

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • mozilla.org https://www.mozilla.org/en-US/security/advisories/mfsa2017-15/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.