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.
5.5	$0-$5k	0.09

Summaryinfo

A vulnerability marked as problematic has been reported in OpenCV wechat_qrcode Module up to 4.7.0. Affected by this vulnerability is the function DecodedBitStreamParser::decodeByteSegment of the file qrcode/decoder/decoded_bit_stream_parser.cpp. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2023-2617. The attack is possible to be carried out remotely. Moreover, an exploit is present. To fix this issue, it is recommended to deploy a patch. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability classified as problematic was found in OpenCV wechat_qrcode Module up to 4.7.0 (Image Processing Software). Affected by this vulnerability is the function DecodedBitStreamParser::decodeByteSegment of the file qrcode/decoder/decoded_bit_stream_parser.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was disclosed 05/10/2023 by Haoyu Chen, Linkai Zheng, Liangyu Zhang (GZTimeWalker, Konano and determ1ne) with Sun Yat-sen University/Tsinghua University/Zhejiang University as 3480. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-2617. Technical details and also a public exploit are known.

A public exploit has been developed by Haoyu Chen (GZTimeWalker). It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 214909 (Ubuntu 18.04 LTS / 22.04 LTS : OpenCV vulnerabilities (USN-7247-1)), 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 (214909). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Image Processing Software

Vendor

• OpenCV

Name

• wechat_qrcode Module

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (VulDB): 🔍

CVSSv2info

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

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Haoyu Chen (GZTimeWalker)
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 214909
Nessus Name: Ubuntu 18.04 LTS / 22.04 LTS : OpenCV vulnerabilities (USN-7247-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

05/10/2023 🔍
05/10/2023 +0 days 🔍
05/10/2023 +0 days 🔍
02/04/2025 +636 days 🔍

Sourcesinfo

Advisory: 3480
Researcher: Haoyu Chen, Linkai Zheng, Liangyu Zhang (GZTimeWalker, Konano, determ1ne)
Organization: Sun Yat-sen University/Tsinghua University/Zhejiang University
Status: Confirmed

CVE: CVE-2023-2617 (🔍)
GCVE (CVE): GCVE-0-2023-2617
GCVE (VulDB): GCVE-100-228547
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/10/2023 07:11 AM
Updated: 02/04/2025 05:03 AM
Changes: 05/10/2023 07:11 AM (45), 05/10/2023 09:00 AM (2), 05/10/2023 06:11 PM (6), 05/11/2023 06:45 AM (2), 05/11/2023 06:46 AM (1), 05/11/2023 01:33 PM (3), 06/02/2023 07:40 AM (4), 06/02/2023 07:45 AM (28), 01/27/2025 09:51 PM (22), 02/04/2025 05:03 AM (2)
Complete: 🔍
Submitter: NanoApe
Committer: NanoApe
Cache ID: 18:582:40

Submitinfo

Accepted

• Submit #154182: OpenCV wechat_qrcode module has NULL Pointer Dereference (by NanoApe)

Discussion

Interested in the pricing of exploits?

See the underground prices here!