CVE-2017-18926: Buffer Overflow
First published: Fri Nov 06 2020(Updated: )
raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/raptor2 | 2.0.14-1.1~deb10u2 2.0.14-1.1~deb10u1 2.0.14-1.2 2.0.15-4 2.0.16-3 | |
| Librdf Raptor Rdf Syntax Library | =2.0.15 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2017-18926
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18926
- https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1
- https://www.openwall.com/lists/oss-security/2017/06/07/1
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=973889
- https://github.com/dajobe/raptor/commit/590681e546cd9aa18d57dc2ea1858cb734a3863f
- http://www.openwall.com/lists/oss-security/2020/11/13/1
- http://www.openwall.com/lists/oss-security/2020/11/13/2
- http://www.openwall.com/lists/oss-security/2020/11/14/2
- http://www.openwall.com/lists/oss-security/2020/11/16/2
- http://www.openwall.com/lists/oss-security/2020/11/16/3
- https://lists.debian.org/debian-lts-announce/2020/11/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RD67AVORGQXORPWNYYUHCH6YPPT6CI4O/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RVHFYQDMVEBICIL4DBAGRRLPUR4QYWMV/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WDZRNM45VPTQF2BKRWG4YRCHJGQ2L7NS/
- https://www.debian.org/security/2020/dsa-4785
- https://access.redhat.com/errata/RHSA-2021:1842
- https://access.redhat.com/security/cve/cve-2017-18926
- https://bugzilla.redhat.com/show_bug.cgi?id=1896120
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD67AVORGQXORPWNYYUHCH6YPPT6CI4O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVHFYQDMVEBICIL4DBAGRRLPUR4QYWMV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDZRNM45VPTQF2BKRWG4YRCHJGQ2L7NS/
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2017-18926.
What is the title of the vulnerability?
The title of the vulnerability is 'raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15'.
What is the severity of CVE-2017-18926?
The severity of CVE-2017-18926 is high with a severity value of 7.1.
What software is affected by CVE-2017-18926?
The affected software includes Raptor RDF Syntax Library 2.0.15, Debian Debian Linux 9.0 and 10.0, and Fedoraproject Fedora 31, 32, and 33.
How can the CVE-2017-18926 vulnerability be fixed?
To fix CVE-2017-18926, update the affected Raptor RDF Syntax Library version to 2.0.16-3 or apply the corresponding security patches provided by the software vendor.
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