CVE-2017-18926 Memory corruption in n/a

High 7.1 Published 6 Nov 2020 Updated 5 Aug 2024

Heap-based buffer overflow in Raptor RDF library allows attackers to execute arbitrary code or cause denial of service via crafted XML input.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2017-18926?

CVE-2017-18926 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 6 Nov 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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).

Weakness: CWE-787

Which versions are affected by CVE-2017-18926?

It affects 3 products.

Linux distribution packages (23)

`raptor` SUSE:Enterprise Storage 5	All versions	`2.0.15-5.3.1`
`raptor` SUSE:HPE Helion OpenStack 8	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Module for Desktop Applications 15 SP1	All versions	`2.0.15-3.3.1`
`raptor` SUSE:Linux Enterprise Module for Desktop Applications 15 SP2	All versions	`2.0.15-9.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP2-BCL	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP2-LTSS	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP3-BCL	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP3-LTSS	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP4-LTSS	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server 12 SP5	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server for SAP Applications 12 SP2	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Software Development Kit 12 SP5	All versions	`2.0.15-5.3.1`
`raptor` SUSE:Linux Enterprise Workstation Extension 12 SP5	All versions	`2.0.15-5.3.1`
`raptor` SUSE:OpenStack Cloud 7	All versions	`2.0.15-5.3.1`
`raptor` SUSE:OpenStack Cloud 8	All versions	`2.0.15-5.3.1`
`raptor` SUSE:OpenStack Cloud 9	All versions	`2.0.15-5.3.1`
`raptor` SUSE:OpenStack Cloud Crowbar 8	All versions	`2.0.15-5.3.1`
`raptor` SUSE:OpenStack Cloud Crowbar 9	All versions	`2.0.15-5.3.1`
`raptor` openSUSE:Leap 15.1	All versions	`2.0.15-lp151.3.3.1`
`raptor` openSUSE:Leap 15.2	All versions	`2.0.15-lp152.4.3.1`

Products include Debian Debian Linux, Fedoraproject Fedora, Librdf Raptor Rdf Syntax Library.

How do I fix CVE-2017-18926?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-18926 being exploited?

There is no known exploitation of CVE-2017-18926 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as AZL-45321, DEBIAN-CVE-2017-18926, DLA-2438-1, DSA-4785-1, GHSA-p2vv-g8rx-7jqj, SUSE-SU-2020:3350-1 and 7 more.