PT-2024-14775 · Phpseclib+4 · Phpseclib+4

CVE-2023-52892 · Published 2024-06-27 · Updated 2025-10-22

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions phpseclib versions 1.0.0 through 1.0.21 phpseclib versions 2.0.0 through 2.0.45 phpseclib versions 3.0.0 through 3.0.32

Description The issue arises from the incorrect handling of certain characters in Subject Alternative Name fields within TLS certificates, allowing them to have special meanings in regular expressions. This can lead to name confusion during X.509 certificate host verification, potentially affecting the security of the connection.

Recommendations For versions 1.0.0 through 1.0.21, update to version 1.0.22 or later. For versions 2.0.0 through 2.0.45, update to version 2.0.46 or later. For versions 3.0.0 through 3.0.32, update to version 3.0.33 or later.

Exploit

Fix

DoS

Weakness Enumeration

CWE-436

Related Identifiers

CVE-2023-52892

GHSA-FF7Q-6VWH-V9M4

USN-7404-1

Affected Products

Debian

Linuxmint

Red Os

Ubuntu

Phpseclib

References · 23

• 🔥 https://github.com/phpseclib/phpseclib/issues/1943 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52892.json · Exploit
• https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627 · Patch
• https://osv.dev/vulnerability/USN-7404-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7404-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27355 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-ff7q-6vwh-v9m4 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30130 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52892 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52892 · Security Note
• https://osv.dev/vulnerability/CVE-2023-52892 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-52892 · Security Note
• https://ubuntu.com/security/CVE-2023-52892 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27354 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52892 · Vendor Advisory