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CVE-2017-18926

Good to know:

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Date: November 6, 2020

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).

Language: C

Severity Score

Related Resources (15)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVHFYQDMVEBICIL4DBAGRRLPUR4QYWMV/
https://nvd.nist.gov/vuln/detail/CVE-2017-18926
https://www.debian.org/security/2020/dsa-4785
https://access.redhat.com/security/cve/CVE-2017-18926
http://www.openwall.com/lists/oss-security/2020/11/14/2
https://lists.debian.org/debian-lts-announce/2020/11/msg00012.html
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/2020/11/16/2
http://www.openwall.com/lists/oss-security/2020/11/16/3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD67AVORGQXORPWNYYUHCH6YPPT6CI4O/
https://www.openwall.com/lists/oss-security/2017/06/07/1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDZRNM45VPTQF2BKRWG4YRCHJGQ2L7NS/
https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1
https://www.mend.io/vulnerability-database/CVE-2017-18926

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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