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Ubuntu: USN-6204-1 (CVE-2023-34095): CPDB vulnerability

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Ubuntu: USN-6204-1 (CVE-2023-34095): CPDB vulnerability

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
06/14/2023
Created
07/06/2023
Added
07/06/2023
Modified
01/28/2025

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.

Solution(s)

  • ubuntu-upgrade-cpdb-libs-tools
  • ubuntu-upgrade-libcpdb-frontend2
  • ubuntu-upgrade-libcpdb-libs-common1
  • ubuntu-upgrade-libcpdb-libs-frontend1
  • ubuntu-upgrade-libcpdb-libs-tools
  • ubuntu-upgrade-libcpdb2

References

  • https://attackerkb.com/topics/cve-2023-34095
  • CVE - 2023-34095
  • USN-6204-1
  • 查看数 698
  • 已创建
  • 最后回复

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