VDB-164461 · CVE-2017-18926 · Nessus 236660

Raptor RDF Syntax Library 2.0.15 raptor_xml_writer.c raptor_xml_writer_start_element_common buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Raptor RDF Syntax Library 2.0.15 and classified as critical. Affected by this vulnerability is the function raptor_xml_writer_start_element_common of the file raptor_xml_writer.c. This manipulation causes buffer overflow. This vulnerability is handled as CVE-2017-18926. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in Raptor RDF Syntax Library 2.0.15 (Software Library) and classified as critical. Affected by this vulnerability is the function raptor_xml_writer_start_element_common of the file raptor_xml_writer.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 11/07/2020. The advisory is shared at openwall.com. This vulnerability is known as CVE-2017-18926. The exploitation appears to be easy. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236660 (Alibaba Cloud Linux 3 : 0082: raptor2 (ALINUX3-SA-2022:0082)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (236660). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Software Library

Vendor

Raptor

Name

RDF Syntax Library

Version

2.0.15

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 236660
Nessus Name: Alibaba Cloud Linux 3 : 0082: raptor2 (ALINUX3-SA-2022:0082)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/06/2020 🔍
11/07/2020 +1 days 🔍
11/07/2020 +0 days 🔍
05/18/2025 +1653 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2017-18926 (🔍)
GCVE (CVE): GCVE-0-2017-18926
GCVE (VulDB): GCVE-100-164461

Entryinfo

Created: 11/07/2020 03:39
Updated: 05/18/2025 20:31
Changes: 11/07/2020 03:39 (40), 12/03/2020 13:36 (2), 12/03/2020 13:43 (18), 05/18/2025 20:31 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.