CVE-2023-52892

Publication date 27 June 2024

Last updated 26 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
php-phpseclib 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed 2.0.36-1ubuntu0.1~esm2
20.04 LTS focal
Fixed 2.0.23-2ubuntu0.1~esm2
18.04 LTS bionic
Fixed 2.0.9-1ubuntu0.1~esm2
16.04 LTS xenial
Fixed 2.0.1-1ubuntu0.1~esm2
php-phpseclib3 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed 3.0.13-1ubuntu0.1~esm1
20.04 LTS focal Not in release
phpseclib 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed 1.0.20-1ubuntu0.1~esm1
20.04 LTS focal
Fixed 1.0.18-2ubuntu0.1~esm1
18.04 LTS bionic
Fixed 1.0.9-1ubuntu0.1~esm1
16.04 LTS xenial
Fixed 1.0.1-3ubuntu0.1+esm1

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Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-7404-1
    • phpseclib vulnerabilities
    • 2 April 2025

Other references