7.5

CVE-2023-52892: phpseclib Interpretation Conflict

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2023-52892DEBIAN-CVE-2023-52892
Published 27-06-2024Last modified 21-08-2024
Open JSON

Vulnerability summary

CVE-2023-52892 is a high (CVSS 7.5) Interpretation Conflict vulnerability in phpseclib. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
DLA-4518-1USN-7404-1USN-8769-1

Timeline

  1. 27-06-2024
    PublishedVulnerability first disclosed.
  2. 21-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

0.00 pp

From 0.38% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Phpseclib

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Debian3 products
  • php-phpseclib< 2.0.42-1+deb12u3 | < 2.0.46-1
  • php-phpseclib3< 3.0.19-1+deb12u4 | < 3.0.33-1
  • phpseclib< 1.0.20-1+deb12u3 | < 1.0.22-1
Ubuntu3 products
  • php-phpseclib< 2.0.1-1ubuntu0.1~esm2 | < 2.0.9-1ubuntu0.1~esm2 | < 2.0.23-2ubuntu0.1~esm2 | < 2.0.36-1ubuntu0.1~esm2
  • php-phpseclib3< 3.0.13-1ubuntu0.1~esm1
  • phpseclib< 1.0.1-3ubuntu0.1+esm1 | < 1.0.9-1ubuntu0.1~esm1 | < 1.0.18-2ubuntu0.1~esm1 | < 1.0.20-1+deb12u3build0.22.04.1 | < 1.0.20-1ubuntu0.1~esm1
Phpseclib1 product
  • phpseclib≥ 1.0.0, < 1.0.22 | ≥ 2.0.0, < 2.0.46 | ≥ 3.0.0, < 3.0.33

3 vendors · 7 products

References

9 links