CVE-2017-18926

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).

• CWE-787

• http://www.openwall.com/lists/oss-security/2020/11/13/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/13/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/14/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/16/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/16/3Mailing List, Third Party Advisory
• https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/11/msg00012.htmlMailing List, Third Party Advisory
• 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/
• https://www.debian.org/security/2020/dsa-4785Third Party Advisory
• https://www.openwall.com/lists/oss-security/2017/06/07/1Exploit, Mailing List, Patch, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/13/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/13/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/14/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/16/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/16/3Mailing List, Third Party Advisory
• https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/11/msg00012.htmlMailing List, Third Party Advisory
• 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/
• https://www.debian.org/security/2020/dsa-4785Third Party Advisory
• https://www.openwall.com/lists/oss-security/2017/06/07/1Exploit, Mailing List, Patch, Third Party Advisory

Published

Nov 6, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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