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CVE-2023-34095— cpdb-libs vulnerable to buffer overflows via scanf

Quick assessment

Affected
OpenPrinting cpdb-libs
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.

cpdb-libs是OpenPrinting开源的一个通用打印对话框的前端和后端库。 cpdb-libs 1.0至2.0b4版本存在安全漏洞，该漏洞源于没有正确使用scanf()导致缓冲区溢出。

CVSS 9.8 · Critical EPSS 1.54% · P73

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-34095

Vulnerability Information
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Vulnerability Title
cpdb-libs vulnerable to buffer overflows via scanf
Source: CVE Program / CVE List V5
Vulnerability Description
cpdb-libs provides frontend and backend libraries for the Common Printing Dialog Backends (CPDB) project. In versions 1.0 through 2.0b4, cpdb-libs is vulnerable to buffer overflows via improper use of `scanf(3)`. cpdb-libs uses the `fscanf()` and `scanf()` functions to parse command lines and configuration files, dropping the read string components into fixed-length buffers, but does not limit the length of the strings to be read by `fscanf()` and `scanf()` causing buffer overflows when a string is longer than 1023 characters. A patch for this issue is available at commit f181bd1f14757c2ae0f17cc76dc20421a40f30b7. As all buffers have a length of 1024 characters, the patch limits the maximum string length to be read to 1023 by replacing all occurrences of `%s` with `%1023s` in all calls of the `fscanf()` and `scanf()` functions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
cpdb-libs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cpdb-libs是OpenPrinting开源的一个通用打印对话框的前端和后端库。 cpdb-libs 1.0至2.0b4版本存在安全漏洞，该漏洞源于没有正确使用scanf()导致缓冲区溢出。
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
OpenPrinting cpdb-libs >= 1.0, <= 2.0b4 -

II. Public POCs for CVE-2023-34095

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III. Intelligence Information for CVE-2023-34095

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Patches & Fixes for CVE-2023-34095 (1)

Vendor Advisories for CVE-2023-34095 (1)

Mailing List Discussions for CVE-2023-34095 (1)

Other References for CVE-2023-34095 (3)

IV. Related Vulnerabilities

Same vendor: OpenPrinting
Same weakness: CWE-121

V. Comments for CVE-2023-34095

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