CVE-2018-1311
HIGHCVSS 8.1/10EPSS 9.50%
Last modified
CVE-2018-1311 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. EPSS estimates a 9.50% chance of exploitation in the next 30 days.
Description
The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Xerces-C\+\+ | >= 3.0.0, < 3.2.5 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Eus | 7.7 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.7 |
| Redhat | Enterprise Linux Server Tus | 7.7 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Oracle | Goldengate | < 21.4.0.0.0 |
| Fedoraproject | Fedora | 38 |
| Fedoraproject | Fedora | 39 |
References
- http://www.openwall.com/lists/oss-security/2024/02/16/1Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0702Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0704Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00027.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7A6WWL4SWKAVYK6VK5YN7KZP4MZWC7IY/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJYZUBGPVWJ7LEHRCMB5XVADQBNGURXD/Mailing List, Third Party Advisory
- https://marc.info/?l=xerces-c-users&m=157653840106914&w=2Mailing List, Third Party Advisory
- https://www.debian.org/security/2020/dsa-4814Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/02/16/1Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0702Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0704Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00027.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7A6WWL4SWKAVYK6VK5YN7KZP4MZWC7IY/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJYZUBGPVWJ7LEHRCMB5XVADQBNGURXD/Mailing List, Third Party Advisory
- https://marc.info/?l=xerces-c-users&m=157653840106914&w=2Mailing List, Third Party Advisory
- https://www.debian.org/security/2020/dsa-4814Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-1311?
The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.
How severe is CVE-2018-1311?
CVE-2018-1311 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 9.50% probability of exploitation in the next 30 days.
How do I fix CVE-2018-1311?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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