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CVE-2023-2617— OpenCV wechat_qrcode Module decoded_bit_stream_parser.cpp decodeByteSegment null pointer dereference

Quick assessment

Affected

OpenCV wechat_qrcode Module

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenCV是一款开源的、跨平台的、轻量级计算机视觉库。 OpenCV wechat_qrcode模块存在代码问题漏洞，该漏洞源于文件qrcode/decoder/decoded_bit_stream_parser.cpp的函数DecodedBitStreamParser::decodeByteSegment可能导致空指针取消引用。

CVSS 5.3 · Medium EPSS 1.36% · P71 Updated Jan 28, 2025

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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I. Basic Information for CVE-2023-2617

Vulnerability Information

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Vulnerability Title

OpenCV wechat_qrcode Module decoded_bit_stream_parser.cpp decodeByteSegment null pointer dereference

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability classified as problematic was found 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. The manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-228547.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

空指针解引用

Source: CVE Program / CVE List V5

Vulnerability Title

OpenCV 代码问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenCV	wechat_qrcode Module	4.0	-

II. Public POCs for CVE-2023-2617

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2023-2617

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Patches & Fixes for CVE-2023-2617 (1)

🔗 fix(wechat_qrcode): Init nBytes after the count value is determined by Konano · Pull Request #3480 · opencv/opencv_contrib · GitHub Read full article issue-tracking patch

Vendor Advisories for CVE-2023-2617 (2)

https://vuldb.com/?ctiid.228547 signature permissions-required
https://vuldb.com/?id.228547 vdb-entry technical-description

Other References for CVE-2023-2617 (1)

https://gist.github.com/GZTimeWalker/3ca70a8af2f5830711e9cccc73fb5270 exploit

https://www.cve.org/CVERecord?id=CVE-2023-2617

IV. Related Vulnerabilities

Same product: wechat_qrcode Module

CVE-2023-2618
OpenCV wechat_qrcode Module decoded_bit_stream_parser.cpp de

Same vendor: OpenCV

Same weakness: CWE-476