glib2: NULL pointer dereference in g_markup_parse_context_end_parse() function in gmarkup.c
Published Sep 4, 2018
9.8
CRITICALCVSS 3.0
EPSS 4.69%
Description
In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.
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
Not affected
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 | Not affected | 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 mitigation
Since the only affected code in this flaw is g_markup_parse_context_end_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:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.69% (0.04693) | 91.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.69% (0.04693) | 90.60th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.13% (0.01134) | 76.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.12% (0.03115) | 77.94th | v4 (v2025.03.14) |
| Jul 20, 2024 | 2.27% (0.02272) | 89.76th | v3 (v2023.03.01) |
| Jun 19, 2024 | 2.27% (0.02272) | 89.67th | v3 (v2023.03.01) |
| Apr 23, 2024 | 3.19% (0.03185) | 91.06th | v3 (v2023.03.01) |
| Mar 30, 2024 | 3.17% (0.03172) | 90.95th | v3 (v2023.03.01) |
| Feb 16, 2024 | 6.13% (0.06135) | 93.28th | v3 (v2023.03.01) |
| Jan 25, 2024 | 8.43% (0.08432) | 93.83th | v3 (v2023.03.01) |
| Jan 3, 2024 | 8.90% (0.08901) | 93.98th | v3 (v2023.03.01) |
| Aug 28, 2023 | 16.13% (0.16134) | 95.29th | v3 (v2023.03.01) |
| May 8, 2023 | 15.40% (0.15399) | 95.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 14.25% (0.14251) | 94.79th | 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 |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
References (11)
- http://www.openwall.com/lists/oss-security/2020/02/14/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/105210 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-16428 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1626145 Issue Tracking
- https://gitlab.gnome.org/GNOME/glib/commit/fccef3cc822af74699cca84cd202719ae61ca3b9 x_refsource_MISCPatchVendor Advisory
- https://gitlab.gnome.org/GNOME/glib/issues/1364 x_refsource_MISCExploitVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/07/msg00029.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-16428
- 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-2018-16428
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2020/02/14/3 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/105210 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-16428 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1626145 | Issue Tracking | |
| https://gitlab.gnome.org/GNOME/glib/commit/fccef3cc822af74699cca84cd202719ae61ca3b9 | x_refsource_MISCPatchVendor Advisory | |
| https://gitlab.gnome.org/GNOME/glib/issues/1364 | x_refsource_MISCExploitVendor Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/07/msg00029.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-16428 | ||
| 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-2018-16428 |
Change history (0)
No recorded changes yet.