CVE-2016-9851: Phpmyadmin/phpmyadmin PhpMyAdmin Bypass Logout Timeout Vulnerability

MODERATE
Advisory Identifier: GHSA-r2vw-p77f-vc27
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CVSS 5.3
CWE-384
Published
Advisory Summary

CVE-2016-9851 is a MODERATE (CVSS 5.3) phpmyadmin bypass logout timeout vulnerability (CWE-384: Session Fixation) affecting Phpmyadmin/phpmyadmin libraries in the Packagist ecosystem. The issue involves phpmyadmin bypass logout timeout. Remediation is available by upgrading affected packages to version 4.6.5, 4.4.15.9.

CVE-2016-9851 at a Glance

CVE Identifier CVE-2016-9851
GHSA Identifier GHSA-r2vw-p77f-vc27
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-384: Session Fixation
Affected Product Phpmyadmin/phpmyadmin
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

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 Low (I:L)
Availability None (A:N)

How to Fix CVE-2016-9851

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

phpmyadmin/phpmyadmin fixed: 4.6.5 
Upgrade phpmyadmin/phpmyadmin to 4.6.5
phpmyadmin/phpmyadmin fixed: 4.4.15.9 
Upgrade phpmyadmin/phpmyadmin to 4.4.15.9
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 phpmyadmin/phpmyadmin

How to Check if You Are Affected

To determine whether your application is affected by CVE-2016-9851, inspect your project dependencies for Phpmyadmin/phpmyadmin:

inspect dependencies for phpmyadmin/phpmyadmin

Analyze the terminal output to locate any version of Phpmyadmin/phpmyadmin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.6.5), 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-384: Session Fixation, where authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. In Phpmyadmin/phpmyadmin, 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

An issue was discovered in phpMyAdmin. With a crafted request parameter value it is possible to bypass the logout timeout. All 4.6.x versions (prior to 4.6.5), and 4.4.x versions (prior to 4.4.15.9) are affected.

CVE-2016-9851 Affected Phpmyadmin/phpmyadmin Versions

2 component(s)
Fixed Versions:
4.6.54.4.15.9
Product / Package Ecosystem Affected Versions Fixed Version
phpmyadmin/phpmyadmin
 Packagist
≥ 4.6
< 4.6.5
4.6.5
phpmyadmin/phpmyadmin
 Packagist
≥ 4.4
< 4.4.15.9
4.4.15.9

References

NVD — CVE-2016-9851 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9851
Phpmyadmin/phpmyadmin Source Repository REPOSITORY
https://github.com/phpmyadmin/composer
Phpmyadmin/phpmyadmin Security Information SECURITY
https://security.gentoo.org/glsa/201701-32
Phpmyadmin/phpmyadmin Security Information SECURITY
https://www.phpmyadmin.net/security/PMASA-2016-62
Phpmyadmin/phpmyadmin Security Information SECURITY
http://www.securityfocus.com/bid/94534

Frequently Asked Questions

What is CVE-2016-9851?
CVE-2016-9851 is a security vulnerability in Phpmyadmin/phpmyadmin involving phpMyAdmin Bypass logout timeout under CWE-384: Session Fixation.
Which Phpmyadmin/phpmyadmin versions are affected?
Affected versions include releases prior to 4.6.5, 4.4.15.9 across affected packages: phpmyadmin/phpmyadmin.
What version fixes CVE-2016-9851?
Upgrading to 4.6.5, 4.4.15.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is phpmyadmin/phpmyadmin affected?
Yes, phpmyadmin/phpmyadmin is affected in releases prior to 4.6.5, 4.4.15.9. Upgrade your dependency to 4.6.5, 4.4.15.9 or later.
What is the CVSS score of CVE-2016-9851?
CVE-2016-9851 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2016-9851?
CVE-2016-9851 is classified under CWE-384: Session Fixation (Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.).
How can I check Packagist dependencies for CVE-2016-9851?
Run the dependency tree command: 'inspect dependencies for phpmyadmin/phpmyadmin'. 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-r2vw-p77f-vc27",
  "modified" : "2024-04-24T18:11:42Z",
  "published" : "2022-05-17T02:36:38Z",
  "aliases" : [ "CVE-2016-9851" ],
  "summary" : "phpMyAdmin Bypass logout timeout",
  "details" : "An issue was discovered in phpMyAdmin. With a crafted request parameter value it is possible to bypass the logout timeout. All 4.6.x versions (prior to 4.6.5), and 4.4.x versions (prior to 4.4.15.9) are affected.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpmyadmin/phpmyadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.6"
      }, {
        "fixed" : "4.6.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpmyadmin/phpmyadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.4"
      }, {
        "fixed" : "4.4.15.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-9851"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phpmyadmin/composer"
  }, {
    "type" : "WEB",
    "url" : "https://security.gentoo.org/glsa/201701-32"
  }, {
    "type" : "WEB",
    "url" : "https://www.phpmyadmin.net/security/PMASA-2016-62"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/94534"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-384" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T18:11:42Z",
    "nvd_published_at" : "2016-12-11T02:59:00Z"
  }
}