glib2: Out-of-bounds read in g_markup_parse_context_parse() in gmarkup.c
Published Sep 4, 2018
7.5
HIGHCVSS 3.0
EPSS 3.53%
Description
GNOME GLib 2.56.1 has an out-of-bounds read vulnerability in g_markup_parse_context_parse() in gmarkup.c, related to utf8_str().
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 16.04
- 18.04
No data.
Red Hat Enterprise Linux 5
firefox
Will not fix
Red Hat Enterprise Linux 5
glib2
Will not fix
Red Hat Enterprise Linux 6
firefox
Will not fix
Red Hat Enterprise Linux 6
glib2
Will not fix
Red Hat Enterprise Linux 6
thunderbird
Will not fix
Red Hat Enterprise Linux 7
firefox
Will not fix
Red Hat Enterprise Linux 7
glib2
Fix deferred
Red Hat Enterprise Linux 7
thunderbird
Will not fix
Red Hat Enterprise Linux 8
firefox
Not affected
Red Hat Enterprise Linux 8
glib2
Not affected
Red Hat Enterprise Linux 8
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | glib2 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | glib2 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | glib2 | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 8 | glib2 | Not affected | n/a |
| Red Hat Enterprise Linux 8 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The glib2 package in Red Hat Enterprise Linux 8 is not affected by this vulnerability because a newer and fixed version is shipped.
Red Hat mitigation
Since the only affected code in this flaw is g_markup_parse_context_parse(), any application (compiled with glib2) which does not use this function or any other function which calls this vulnerable code, is not affected by this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.53% (0.03532) | 88.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.53% (0.03532) | 87.72th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.38% (0.00383) | 73.29th | v3 (v2023.03.01) |
| Jun 19, 2024 | 0.38% (0.00383) | 73.12th | v3 (v2023.03.01) |
| Apr 23, 2024 | 0.54% (0.00543) | 77.12th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.51% (0.00511) | 76.16th | v3 (v2023.03.01) |
| Jan 25, 2024 | 0.51% (0.00511) | 74.15th | v3 (v2023.03.01) |
| Aug 28, 2023 | 0.55% (0.00554) | 74.66th | v3 (v2023.03.01) |
| May 8, 2023 | 0.48% (0.00476) | 72.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.43% (0.00434) | 70.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.66% (0.01659) | 34.20th | v1 |
| Jan 6, 2022 | 1.66% (0.01659) | 33.50th | v1 |
| Sep 1, 2021 | 1.66% (0.01659) | 73.96th | v1 |
| Jun 30, 2021 | 1.66% (0.01659) | 0.00th | v1 |
| Jun 29, 2021 | 1.45% (0.01454) | 0.00th | v1 |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (11)
- https://access.redhat.com/security/cve/CVE-2018-16429 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1626148 Issue Tracking
- https://gitlab.gnome.org/GNOME/glib/commit/cec71705406f0b2790422f0c1aa0ff3b4b464b1b x_refsource_MISCPatchVendor Advisory
- https://gitlab.gnome.org/GNOME/glib/issues/1361 x_refsource_MISCExploitVendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2019/07/msg00029.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-16429
- https://usn.ubuntu.com/3767-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3767-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-16429
Change history (0)
No recorded changes yet.