xerces-c: Stack overflow when parsing deeply nested DTD
Published Jul 8, 2016
7.5
HIGHCVSS 3.0
EPSS 14.14%
Description
Stack-based buffer overflow in Apache Xerces-C++ before 3.1.4 allows context-dependent attackers to cause a denial of service via a deeply nested DTD.
Affected products
No data.
Configuration 1
- ≤ 3.1.3
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 7
xerces-c-0:3.1.1-9.el7
Fixed · RHSA-2018:3335
Red Hat Enterprise Linux 7.4 Extended Update Support
xerces-c-0:3.1.1-8.el7_4.1
Fixed · RHSA-2018:3514
Red Hat Enterprise Linux 7.5 Extended Update Support
xerces-c-0:3.1.1-8.el7_5.1
Fixed · RHSA-2018:3506
Red Hat Enterprise Linux 6
xerces-c
Will not fix
Red Hat Enterprise MRG 2
xerces-c
Under investigation
Red Hat Enterprise MRG 3
xerces-c
Under investigation
Red Hat OpenShift Enterprise 2
xerces-c
Under investigation
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | xerces-c-0:3.1.1-9.el7 | Fixed | RHSA-2018:3335 |
| Red Hat Enterprise Linux 7.4 Extended Update Support | xerces-c-0:3.1.1-8.el7_4.1 | Fixed | RHSA-2018:3514 |
| Red Hat Enterprise Linux 7.5 Extended Update Support | xerces-c-0:3.1.1-8.el7_5.1 | Fixed | RHSA-2018:3506 |
| Red Hat Enterprise Linux 6 | xerces-c | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | xerces-c | Under investigation | n/a |
| Red Hat Enterprise MRG 3 | xerces-c | Under investigation | n/a |
| Red Hat OpenShift Enterprise 2 | xerces-c | Under investigation | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
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
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (29 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 14.14% (0.14138) | 96.47th | v5 (v2026.06.15) |
| Sep 22, 2026 | 14.14% (0.14138) | 96.41th | v5 (v2026.06.15) |
| Sep 21, 2026 | 11.30% (0.11299) | 95.84th | v5 (v2026.06.15) |
| Sep 6, 2026 | 14.14% (0.14138) | 96.33th | v5 (v2026.06.15) |
| Sep 5, 2026 | 11.30% (0.11299) | 95.75th | v5 (v2026.06.15) |
| Aug 30, 2026 | 14.14% (0.14138) | 96.30th | v5 (v2026.06.15) |
| Aug 28, 2026 | 11.30% (0.11299) | 95.72th | v5 (v2026.06.15) |
| Aug 24, 2026 | 14.14% (0.14138) | 96.28th | v5 (v2026.06.15) |
| Aug 23, 2026 | 11.30% (0.11299) | 95.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 14.25% (0.14250) | 96.13th | v5 (v2026.06.15) |
| Jan 30, 2026 | 38.35% (0.38346) | 97.12th | v4 (v2025.03.14) |
| Sep 2, 2025 | 32.07% (0.32071) | 96.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 33.47% (0.33470) | 96.56th | v4 (v2025.03.14) |
| Mar 29, 2025 | 61.40% (0.61400) | 97.60th | v4 (v2025.03.14) |
| Mar 28, 2025 | 33.47% (0.33470) | 96.56th | v4 (v2025.03.14) |
| Mar 27, 2025 | 61.40% (0.61400) | 98.08th | v4 (v2025.03.14) |
| Mar 20, 2025 | 50.94% (0.50939) | 97.66th | v4 (v2025.03.14) |
| Mar 19, 2025 | 61.40% (0.61400) | 98.11th | v4 (v2025.03.14) |
| Mar 17, 2025 | 50.94% (0.50939) | 97.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.75% (0.00750) | 81.67th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.75% (0.00750) | 80.59th | v3 (v2023.03.01) |
| Feb 28, 2024 | 0.44% (0.00436) | 74.05th | v3 (v2023.03.01) |
| Jan 21, 2024 | 0.44% (0.00436) | 72.05th | v3 (v2023.03.01) |
| Dec 19, 2023 | 0.58% (0.00576) | 75.55th | v3 (v2023.03.01) |
| Aug 31, 2023 | 0.53% (0.00529) | 74.10th | v3 (v2023.03.01) |
| Jun 11, 2023 | 0.37% (0.00373) | 68.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00355) | 67.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.28% (0.34284) | 97.70th | v2 (v2022.01.01) |
| Feb 4, 2022 | 34.28% (0.34284) | 96.67th | v2 (v2022.01.01) |
References (19)
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00053.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00013.html vendor-advisoryx_refsource_SUSE
- http://packetstormsecurity.com/files/137714/Apache-Xerces-C-XML-Parser-Crash.html x_refsource_MISC
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/538784/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/91501 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036211 vdb-entryx_refsource_SECTRACK
- http://xerces.apache.org/xerces-c/secadv/CVE-2016-4463.txt x_refsource_CONFIRM
- https://access.redhat.com/errata/RHSA-2018:3335 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:3506 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:3514 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-4463 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1348845 Issue Tracking
- https://issues.apache.org/jira/browse/XERCESC-2069 x_refsource_CONFIRM
- https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=10510&version=12336069 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-4463
- https://www.cve.org/CVERecord?id=CVE-2016-4463
- https://www.debian.org/security/2016/dsa-3610 vendor-advisoryx_refsource_DEBIAN
- https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
Change history (0)
No recorded changes yet.