GHSA-hg35-mp25-qf6h: Duplicate Advisory Phpseclib: Guardrails Needed On IsPrime Vulnerability

HIGH
Share
CVSS 7.5
CWE-400
Published
Advisory Summary

GHSA-hg35-mp25-qf6h is a HIGH (CVSS 7.5) phpseclib: guardrails needed on isprime vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Duplicate Advisory libraries in the Packagist ecosystem. The issue involves phpseclib: guardrails needed on isprime and randomprime. Remediation is available by upgrading affected packages to version 1.0.23, 2.0.47, 3.0.36.

GHSA-hg35-mp25-qf6h at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-hg35-mp25-qf6h
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Duplicate Advisory
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix GHSA-hg35-mp25-qf6h

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

phpseclib/phpseclib fixed: 1.0.23 
Upgrade phpseclib/phpseclib to 1.0.23
phpseclib/phpseclib fixed: 2.0.47 
Upgrade phpseclib/phpseclib to 2.0.47
phpseclib/phpseclib fixed: 3.0.36 
Upgrade phpseclib/phpseclib to 3.0.36
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for phpseclib/phpseclib

How to Check if You Are Affected

To determine whether your application is affected by GHSA-hg35-mp25-qf6h, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for phpseclib/phpseclib

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.23), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2528-jw5q-ww88. This link is maintained to preserve external references. ### Original Description An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.

GHSA-hg35-mp25-qf6h Affected Duplicate Advisory Versions

3 component(s)
Fixed Versions:
1.0.232.0.473.0.36
Product / Package Ecosystem Affected Versions Fixed Version
phpseclib/phpseclib
 Packagist
≥ 1.0.0
< 1.0.23
1.0.23
phpseclib/phpseclib
 Packagist
≥ 2.0.0
< 2.0.47
2.0.47
phpseclib/phpseclib
 Packagist
≥ 3.0.0
< 3.0.36
3.0.36

References

NVD — GHSA-hg35-mp25-qf6h NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-27354
Security Fix Commit FIX COMMIT
https://github.com/phpseclib/phpseclib/commit/2870c8fab3f132d2ed40a66c97a36fe5ab625698
Security Fix Commit FIX COMMIT
https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575
Security Fix Commit FIX COMMIT
https://github.com/phpseclib/phpseclib/commit/c55b75199ec8d12cec6eadf6da99da4a3712fe56
Duplicate Advisory Source Repository REPOSITORY
https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
Duplicate Advisory Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27354.yaml
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-hg35-mp25-qf6h
Duplicate Advisory Source Repository REPOSITORY
https://github.com/phpseclib/phpseclib
Duplicate Advisory Source Repository REPOSITORY
https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html

Frequently Asked Questions

What is GHSA-hg35-mp25-qf6h?
GHSA-hg35-mp25-qf6h is a security vulnerability in Duplicate Advisory involving phpseclib: guardrails needed on isPrime and randomPrime under CWE-400: Uncontrolled Resource Consumption.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 1.0.23, 2.0.47, 3.0.36 across affected packages: phpseclib/phpseclib.
What version fixes GHSA-hg35-mp25-qf6h?
Upgrading to 1.0.23, 2.0.47, 3.0.36 (or the latest patched release for your respective branch) resolves the vulnerability.
Is phpseclib/phpseclib affected?
Yes, phpseclib/phpseclib is affected in releases prior to 1.0.23, 2.0.47, 3.0.36. Upgrade your dependency to 1.0.23, 2.0.47, 3.0.36 or later.
What is the CVSS score of GHSA-hg35-mp25-qf6h?
GHSA-hg35-mp25-qf6h has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with GHSA-hg35-mp25-qf6h?
GHSA-hg35-mp25-qf6h is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Packagist dependencies for GHSA-hg35-mp25-qf6h?
Run the dependency tree command: 'inspect dependencies for phpseclib/phpseclib'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hg35-mp25-qf6h",
  "modified" : "2026-05-06T17:56:50Z",
  "published" : "2024-03-02T00:31:33Z",
  "withdrawn" : "2026-05-06T17:56:50Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: phpseclib: guardrails needed on isPrime and randomPrime",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-2528-jw5q-ww88. This link is maintained to preserve external references.\n\n### Original Description\nAn issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.",
  "severity" : [ {
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  }, {
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  } ],
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  }, {
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      "ecosystem" : "Packagist",
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    } ]
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    "ranges" : [ {
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        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.36"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-27354"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/commit/2870c8fab3f132d2ed40a66c97a36fe5ab625698"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/commit/c55b75199ec8d12cec6eadf6da99da4a3712fe56"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27354.yaml"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-hg35-mp25-qf6h"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phpseclib/phpseclib"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-04T20:41:54Z",
    "nvd_published_at" : "2024-03-01T23:15:08Z"
  }
}