CVE-2018-8073: Yiisoft/yii2 redis Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-4hx3-m8w5-g5qh
Share
CVSS 9.8
CWE-94
Published
Advisory Summary

CVE-2018-8073 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Yiisoft/yii2 redis libraries in the Packagist ecosystem. The issue involves yii2-redis potential remote code execution. Remediation is available by upgrading affected packages to version 2.0.8.

CVE-2018-8073 at a Glance

CVE Identifier CVE-2018-8073
GHSA Identifier GHSA-4hx3-m8w5-g5qh
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Yiisoft/yii2 redis
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2018-8073

To remediate this vulnerability, upgrade all affected Yiisoft/yii2 redis dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

yiisoft/yii2-redis fixed: 2.0.8 
Upgrade yiisoft/yii2-redis to 2.0.8
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 yiisoft/yii2-redis

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-8073, inspect your project dependencies for Yiisoft/yii2 redis:

inspect dependencies for yiisoft/yii2-redis

Analyze the terminal output to locate any version of Yiisoft/yii2 redis in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.8), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Yiisoft/yii2 redis, 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

Potential remote code execution in LUA context of the redis server via methods `yii\redis\ActiveRecord::findOne()` and `yii\redis\ActiveRecord::findAll()` in yiisoft/yii2-redis. Attackers could probably manipulate data on the redis server.

CVE-2018-8073 Affected Yiisoft/yii2 redis Versions

1 component(s)
Fixed Versions:
2.0.8
Product / Package Ecosystem Affected Versions Fixed Version
yiisoft/yii2-redis
 Packagist
< 2.0.8
2.0.8

References

NVD — CVE-2018-8073 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-8073
Yiisoft/yii2 redis Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/yiisoft/yii2-redis/CVE-2018-8073.yaml
Yiisoft/yii2 redis Source Repository REPOSITORY
https://github.com/yiisoft/yii2-redis
Yiisoft/yii2 redis Security Information SECURITY
https://www.yiiframework.com/news/168/releasing-yii-2-0-15-and-database-extensions-with-security-fixes
Yiisoft/yii2 redis Security Information SECURITY
http://www.yiiframework.com/news/168/releasing-yii-2-0-15-and-database-extensions-with-security-fixes

Frequently Asked Questions

What is CVE-2018-8073?
CVE-2018-8073 is a security vulnerability in Yiisoft/yii2 redis involving yii2-redis Potential Remote code execution under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Yiisoft/yii2 redis versions are affected?
Affected versions include releases prior to 2.0.8 across affected packages: yiisoft/yii2-redis.
What version fixes CVE-2018-8073?
Upgrading to 2.0.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yiisoft/yii2-redis affected?
Yes, yiisoft/yii2-redis is affected in releases prior to 2.0.8. Upgrade your dependency to 2.0.8 or later.
What is the CVSS score of CVE-2018-8073?
CVE-2018-8073 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-8073?
CVE-2018-8073 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for CVE-2018-8073?
Run the dependency tree command: 'inspect dependencies for yiisoft/yii2-redis'. 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-4hx3-m8w5-g5qh",
  "modified" : "2024-04-24T18:32:01Z",
  "published" : "2022-05-14T03:31:31Z",
  "aliases" : [ "CVE-2018-8073" ],
  "summary" : "yii2-redis Potential Remote code execution",
  "details" : "Potential remote code execution in LUA context of the redis server via methods `yii\\redis\\ActiveRecord::findOne()` and `yii\\redis\\ActiveRecord::findAll()` in yiisoft/yii2-redis. Attackers could probably manipulate data on the redis server.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "yiisoft/yii2-redis"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-8073"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/yiisoft/yii2-redis/CVE-2018-8073.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/yiisoft/yii2-redis"
  }, {
    "type" : "WEB",
    "url" : "https://www.yiiframework.com/news/168/releasing-yii-2-0-15-and-database-extensions-with-security-fixes"
  }, {
    "type" : "WEB",
    "url" : "http://www.yiiframework.com/news/168/releasing-yii-2-0-15-and-database-extensions-with-security-fixes"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T18:32:01Z",
    "nvd_published_at" : "2018-03-21T18:29:00Z"
  }
}