GHSA-jr22-8qgm-4q87: Duplicate Advisory Phpseclib Does Not Properly Limit Vulnerability

HIGH
Share
CVSS 7.5
CWE-400
Published
Advisory Summary

GHSA-jr22-8qgm-4q87 is a HIGH (CVSS 7.5) phpseclib does not properly limit vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Duplicate Advisory libraries in the Packagist ecosystem. The issue involves phpseclib does not properly limit the asn1 oid length. Remediation is available by upgrading affected packages to version 3.0.36, 2.0.47, 1.0.23.

GHSA-jr22-8qgm-4q87 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-jr22-8qgm-4q87
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-jr22-8qgm-4q87

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: 3.0.36 
Upgrade phpseclib/phpseclib to 3.0.36
phpseclib/phpseclib fixed: 2.0.47 
Upgrade phpseclib/phpseclib to 2.0.47
phpseclib/phpseclib fixed: 1.0.23 
Upgrade phpseclib/phpseclib to 1.0.23
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-jr22-8qgm-4q87, 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 3.0.36), 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-f2qx-66wf-wvvx. 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. When processing the ASN.1 object identifier of a certificate, a sub identifier may be provided that leads to a denial of service (CPU consumption for decodeOID).

GHSA-jr22-8qgm-4q87 Affected Duplicate Advisory Versions

3 component(s)
Fixed Versions:
3.0.362.0.471.0.23
Product / Package Ecosystem Affected Versions Fixed Version
phpseclib/phpseclib
 Packagist
≥ 3.0.0
< 3.0.36
3.0.36
phpseclib/phpseclib
 Packagist
≥ 2.0.0
< 2.0.47
2.0.47
phpseclib/phpseclib
 Packagist
≥ 1.0.0
< 1.0.23
1.0.23

References

NVD — GHSA-jr22-8qgm-4q87 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-27355
Security Fix Commit FIX COMMIT
https://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59
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-2024-27355.yaml
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-jr22-8qgm-4q87
Duplicate Advisory Source Repository REPOSITORY
https://github.com/phpseclib/phpseclib
Duplicate Advisory Source Repository REPOSITORY
https://github.com/phpseclib/phpseclib/blob/978d081fe50ff92879c50ff143c62a143edb0117/phpseclib/File/ASN1.php#L1129
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-jr22-8qgm-4q87?
GHSA-jr22-8qgm-4q87 is a security vulnerability in Duplicate Advisory involving phpseclib does not properly limit the ASN1 OID length under CWE-400: Uncontrolled Resource Consumption.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 3.0.36, 2.0.47, 1.0.23 across affected packages: phpseclib/phpseclib.
What version fixes GHSA-jr22-8qgm-4q87?
Upgrading to 3.0.36, 2.0.47, 1.0.23 (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 3.0.36, 2.0.47, 1.0.23. Upgrade your dependency to 3.0.36, 2.0.47, 1.0.23 or later.
What is the CVSS score of GHSA-jr22-8qgm-4q87?
GHSA-jr22-8qgm-4q87 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-jr22-8qgm-4q87?
GHSA-jr22-8qgm-4q87 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-jr22-8qgm-4q87?
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-jr22-8qgm-4q87",
  "modified" : "2026-05-08T18:24:10Z",
  "published" : "2024-03-02T00:31:33Z",
  "withdrawn" : "2026-05-08T18:24:10Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: phpseclib does not properly limit the ASN1 OID length",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-f2qx-66wf-wvvx. 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. When processing the ASN.1 object identifier of a certificate, a sub identifier may be provided that leads to a denial of service (CPU consumption for decodeOID).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpseclib/phpseclib"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.36"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpseclib/phpseclib"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.0.47"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpseclib/phpseclib"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0"
      }, {
        "fixed" : "1.0.23"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-27355"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27355.yaml"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-jr22-8qgm-4q87"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phpseclib/phpseclib"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phpseclib/phpseclib/blob/978d081fe50ff92879c50ff143c62a143edb0117/phpseclib/File/ASN1.php#L1129"
  }, {
    "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" : "2024-03-04T20:42:19Z",
    "nvd_published_at" : "2024-03-01T23:15:08Z"
  }
}