CVE-2006-0931: PEAR Path Traversal Vulnerability

CRITICAL
Advisory Identifier: GHSA-f3xw-vgc7-f7h8
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CVSS 9.1
CWE-22
Published
Advisory Summary

CVE-2006-0931 is a CRITICAL (CVSS 9.1) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting PEAR libraries in the Packagist ecosystem. The issue involves :archive_tar directory traversal vulnerability. Remediation is available by upgrading affected packages to version 1.3.2.

CVE-2006-0931 at a Glance

CVE Identifier CVE-2006-0931
GHSA Identifier GHSA-f3xw-vgc7-f7h8
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product PEAR
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.1

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2006-0931

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

pear/archive_tar fixed: 1.3.2 
Upgrade pear/archive_tar to 1.3.2
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 pear/archive_tar

How to Check if You Are Affected

To determine whether your application is affected by CVE-2006-0931, inspect your project dependencies for PEAR:

inspect dependencies for pear/archive_tar

Analyze the terminal output to locate any version of PEAR in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.2), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In PEAR, 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

Directory traversal vulnerability in PEAR::Archive_Tar 1.2, and other versions before 1.3.2, allows remote attackers to create and overwrite arbitrary files via certain crafted pathnames in a TAR archive.

CVE-2006-0931 Affected PEAR Versions

1 component(s)
Fixed Versions:
1.3.2
Product / Package Ecosystem Affected Versions Fixed Version
pear/archive_tar
 Packagist
≥ 1.2
< 1.3.2
1.3.2

References

NVD — CVE-2006-0931 NVD
https://nvd.nist.gov/vuln/detail/CVE-2006-0931
PEAR Source Repository REPOSITORY
https://github.com/pear/Archive_Tar
PEAR Security Information SECURITY
http://pear.php.net/bugs/bug.php?id=6933
PEAR Release RELEASE
http://pear.php.net/package/Archive_Tar/download
PEAR Security Information SECURITY
http://www.hamid.ir/security/phptar.txt

Frequently Asked Questions

What is CVE-2006-0931?
CVE-2006-0931 is a security vulnerability in PEAR involving :Archive_Tar Directory Traversal vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which PEAR versions are affected?
Affected versions include releases prior to 1.3.2 across affected packages: pear/archive_tar.
What version fixes CVE-2006-0931?
Upgrading to 1.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pear/archive_tar affected?
Yes, pear/archive_tar is affected in releases prior to 1.3.2. Upgrade your dependency to 1.3.2 or later.
What is the CVSS score of CVE-2006-0931?
CVE-2006-0931 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2006-0931?
CVE-2006-0931 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Packagist dependencies for CVE-2006-0931?
Run the dependency tree command: 'inspect dependencies for pear/archive_tar'. 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-f3xw-vgc7-f7h8",
  "modified" : "2024-10-30T18:09:28Z",
  "published" : "2022-05-01T06:43:51Z",
  "aliases" : [ "CVE-2006-0931" ],
  "summary" : "PEAR::Archive_Tar Directory Traversal vulnerability",
  "details" : "Directory traversal vulnerability in PEAR::Archive_Tar 1.2, and other versions before 1.3.2, allows remote attackers to create and overwrite arbitrary files via certain crafted pathnames in a TAR archive.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pear/archive_tar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2"
      }, {
        "fixed" : "1.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2006-0931"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pear/Archive_Tar"
  }, {
    "type" : "WEB",
    "url" : "http://pear.php.net/bugs/bug.php?id=6933"
  }, {
    "type" : "WEB",
    "url" : "http://pear.php.net/package/Archive_Tar/download"
  }, {
    "type" : "WEB",
    "url" : "http://www.hamid.ir/security/phptar.txt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-30T18:09:28Z",
    "nvd_published_at" : "2006-02-28T11:02:00Z"
  }
}