# CVE-2023-52892: php-phpseclib3: In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fie...

CVE-2023-52892 is fixed in 4 products on 1 platform, first by php-phpseclib 2.0.9-1ubuntu0.1~esm2, released June 27, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-52892
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0038
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 27, 2024

## Description

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | php-phpseclib Debian 12.15 (bookworm) | 2.0.42-1+deb12u3 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib Debian 13.5 (trixie) | 2.0.46-1 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib Debian 14 | 2.0.46-1 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib Ubuntu 18.04.6 LTS (bionic) | 2.0.9-1ubuntu0.1~esm2 | [php-phpseclib 2.0.9-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php-phpseclib-2.0.9-1ubuntu0.1-esm2.md) | Jun 27, 2024 |
| Linux | php-phpseclib Ubuntu 20.04 LTS (focal) | 2.0.23-2ubuntu0.1~esm2 | [php-phpseclib 2.0.23-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-php-phpseclib-2.0.23-2ubuntu0.1-esm2.md) | Jun 27, 2024 |
| Linux | php-phpseclib Ubuntu 22.04.1 LTS (jammy) | 2.0.36-1ubuntu0.1~esm2 | [php-phpseclib 2.0.36-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-php-phpseclib-2.0.36-1ubuntu0.1-esm2.md) | Jun 27, 2024 |
| Linux | php-phpseclib3 Debian 12.15 (bookworm) | 3.0.19-1+deb12u4 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib3 Debian 13.5 (trixie) | 3.0.33-1 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib3 Debian 14 | 3.0.33-1 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | php-phpseclib3 Ubuntu 22.04.1 LTS (jammy) | 3.0.13-1ubuntu0.1~esm1 | [php-phpseclib3 3.0.13-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-php-phpseclib3-3.0.13-1ubuntu0.1-esm1.md) | Jun 27, 2024 |
| Linux | php-seclib Ubuntu 18.04.6 LTS (bionic) | 1.0.9-1ubuntu0.1~esm1 | [php-seclib 1.0.9-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php-seclib-1.0.9-1ubuntu0.1-esm1.md) | Jun 27, 2024 |
| Linux | php-seclib Ubuntu 20.04 LTS (focal) | 1.0.18-2ubuntu0.1~esm1 | [php-seclib 1.0.18-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-php-seclib-1.0.18-2ubuntu0.1-esm1.md) | Jun 27, 2024 |
| Linux | php-seclib Ubuntu 22.04.1 LTS (jammy) | 1.0.20-1ubuntu0.1~esm1 | [php-seclib 1.0.20-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-php-seclib-1.0.20-1ubuntu0.1-esm1.md) | Jun 27, 2024 |
| Linux | phpseclib Debian 11.6 (bullseye) | 1.0.19-3+deb11u3 | [DLA-4518-1](https://patchblox.com/security/data/fix/linux/dla-4518-1.md) | Mar 30, 2026 |
| Linux | phpseclib Debian 12.15 (bookworm) | 1.0.20-1+deb12u3 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |
| Linux | phpseclib Debian 13.5 (trixie) | 1.0.22-1 | [DEBIAN-CVE-2023-52892](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52892.md) | Jun 27, 2024 |

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