CVE-2017-18926

HIGH EPSS 86.1%
Published Nov 6, 20205y ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Nov 6, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

Description

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).

CVSS Details

Base Score
7.1
Exploitability
2.8
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
86.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 6

VendorProductVersionRange
librdfraptor_rdf_syntax_library2.0.15any
debiandebian_linux9.0any
debiandebian_linux10.0any
fedoraprojectfedora31any
fedoraprojectfedora32any
fedoraprojectfedora33any

References 12

  • openwall.com http://www.openwall.com/lists/oss-security/2020/11/13/1
    Mailing ListThird Party Advisory
  • openwall.com http://www.openwall.com/lists/oss-security/2020/11/13/2
    Mailing ListThird Party Advisory
  • openwall.com http://www.openwall.com/lists/oss-security/2020/11/14/2
    Mailing ListThird Party Advisory
  • openwall.com http://www.openwall.com/lists/oss-security/2020/11/16/2
    Mailing ListThird Party Advisory
  • openwall.com http://www.openwall.com/lists/oss-security/2020/11/16/3
    Mailing ListThird Party Advisory
  • github.com https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1
    PatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/11/msg00012.html
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD67AVORGQXORPWNYYUHCH6YPPT6CI4O/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVHFYQDMVEBICIL4DBAGRRLPUR4QYWMV/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDZRNM45VPTQF2BKRWG4YRCHJGQ2L7NS/
  • debian.org https://www.debian.org/security/2020/dsa-4785
    Third Party Advisory
  • openwall.com https://www.openwall.com/lists/oss-security/2017/06/07/1
    ExploitMailing ListPatchThird Party Advisory

Remediation

  • github.com https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1
    PatchThird Party Advisory
  • openwall.com https://www.openwall.com/lists/oss-security/2017/06/07/1
    ExploitMailing ListPatchThird Party Advisory