Buffer overflow in Librdf Raptor Rdf Syntax Library
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).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Librdf Raptor Rdf Syntax Library — versions 2.0.15
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 31, 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2017/06/07/1 (Exploit, Patch, Mailing List, Third Party Advisory)
- github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-… (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/11/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4785 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/13/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/13/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/14/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/16/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/16/2 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2017-18926?
- CVE-2017-18926 is a high-severity vulnerability in Librdf Raptor Rdf Syntax Library, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2020-11-06.
- How severe is CVE-2017-18926?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2017-18926 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.