# CVE-2023-34095: cpdb-libs: cpdb-libs provides frontend and backend libraries for the Common Printing Dialog Backends (CPDB) project

CVE-2023-34095 is fixed in 7 products on 1 platform, first by libcpdb-libs-common1 1.2.0-0ubuntu7.1, released June 13, 2023. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2023-34095
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0154
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 13, 2023

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cpdb-libs Debian 12.15 (bookworm) | 1.2.0-2+deb12u1 | [DEBIAN-CVE-2023-34095](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34095.md) | Jun 14, 2023 |
| Linux | cpdb-libs Debian 13.5 (trixie) | 1.2.0-3 | [DEBIAN-CVE-2023-34095](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34095.md) | Jun 14, 2023 |
| Linux | cpdb-libs Debian 14 | 1.2.0-3 | [DEBIAN-CVE-2023-34095](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34095.md) | Jun 14, 2023 |
| Linux | cpdb-libs-tools Ubuntu 24.10 (oracular) | 2.0~b4-0ubuntu4 | [cpdb-libs-tools 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cpdb-libs-tools-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | cpdb-libs-tools Ubuntu 25.04 (plucky) | 2.0~b4-0ubuntu4 | [cpdb-libs-tools 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-cpdb-libs-tools-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb-frontend2t64 Ubuntu 24.10 (oracular) | 2.0~b4-0ubuntu4 | [libcpdb-frontend2t64 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcpdb-frontend2t64-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb-frontend2t64 Ubuntu 25.04 (plucky) | 2.0~b4-0ubuntu4 | [libcpdb-frontend2t64 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcpdb-frontend2t64-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb-libs-common1 Ubuntu 20.04 LTS (focal) | 1.2.0-0ubuntu7.1 | [libcpdb-libs-common1 1.2.0-0ubuntu7.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcpdb-libs-common1-1.2.0-0ubuntu7.1.md) | Jun 13, 2023 |
| Linux | libcpdb-libs-common1 Ubuntu 22.04.1 LTS (jammy) | 1.2.0-0ubuntu8.1.22.04.1 | [libcpdb-libs-common1 1.2.0-0ubuntu8.1.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcpdb-libs-common1-1.2.0-0ubuntu8.1.22.04.1.md) | Jun 13, 2023 |
| Linux | libcpdb-libs-frontend1 Ubuntu 20.04 LTS (focal) | 1.2.0-0ubuntu7.1 | [libcpdb-libs-frontend1 1.2.0-0ubuntu7.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcpdb-libs-frontend1-1.2.0-0ubuntu7.1.md) | Jun 13, 2023 |
| Linux | libcpdb-libs-frontend1 Ubuntu 22.04.1 LTS (jammy) | 1.2.0-0ubuntu8.1.22.04.1 | [libcpdb-libs-frontend1 1.2.0-0ubuntu8.1.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcpdb-libs-frontend1-1.2.0-0ubuntu8.1.22.04.1.md) | Jun 13, 2023 |
| Linux | libcpdb-libs-tools Ubuntu 24.10 (oracular) | 2.0~b4-0ubuntu4 | [libcpdb-libs-tools 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcpdb-libs-tools-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb-libs-tools Ubuntu 25.04 (plucky) | 2.0~b4-0ubuntu4 | [libcpdb-libs-tools 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcpdb-libs-tools-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb2t64 Ubuntu 24.10 (oracular) | 2.0~b4-0ubuntu4 | [libcpdb2t64 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcpdb2t64-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |
| Linux | libcpdb2t64 Ubuntu 25.04 (plucky) | 2.0~b4-0ubuntu4 | [libcpdb2t64 2.0~b4-0ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcpdb2t64-2.0-b4-0ubuntu4.md) | Jun 14, 2023 |

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