CVE-2021-21501: Github.com/apache/servicecomb service center Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-x6jv-5vfg-gm7x
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2021-21501 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/apache/servicecomb service center libraries in the Go ecosystem. The issue involves path traversal in servicecenter. Remediation is available by upgrading affected packages to version 2.0.0.

CVE-2021-21501 at a Glance

CVE Identifier CVE-2021-21501
GHSA Identifier GHSA-x6jv-5vfg-gm7x
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/apache/servicecomb service center
Package Ecosystem Go
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:H/I:N/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 None (I:N)
Availability None (A:N)

How to Fix CVE-2021-21501

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

github.com/apache/servicecomb-service-center fixed: 2.0.0 
Upgrade github.com/apache/servicecomb-service-center to 2.0.0
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 github.com/apache/servicecomb-service-center

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-21501, inspect your project dependencies for Github.com/apache/servicecomb service center:

inspect dependencies for github.com/apache/servicecomb-service-center

Analyze the terminal output to locate any version of Github.com/apache/servicecomb service center in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.0), 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 Github.com/apache/servicecomb service center, 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

Improper configuration will cause ServiceComb ServiceCenter Directory Traversal problem in ServcieCenter 1.x.x versions and fixed in 2.0.0.

CVE-2021-21501 Affected Github.com/apache/servicecomb service center Versions

1 component(s)
Fixed Versions:
2.0.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/apache/servicecomb-service-center
golang/github.com/apache/servicecomb-service-center
Go
< 2.0.0
2.0.0

References

NVD — CVE-2021-21501 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21501
Github.com/apache/servicecomb service center Source Repository REPOSITORY
https://github.com/apache/servicecomb-service-center/pull/788
Security Fix Commit FIX COMMIT
https://github.com/apache/servicecomb-service-center/commit/f4f44fe5d4a7e530ca8ee7c6f2c9e891ae8353c9
Github.com/apache/servicecomb service center Source Repository REPOSITORY
https://github.com/apache/servicecomb-service-center
lists.apache.org/thread.html/r337be6... WEB
https://lists.apache.org/thread.html/r337be65e504eac52a12e89d7de40345e5d335deee9dd7288f7f59b81%40%3Cdev.servicecomb.apache.org%3E
Github.com/apache/servicecomb service center Security Information SECURITY
http://www.openwall.com/lists/oss-security/2021/08/10/3

Frequently Asked Questions

What is CVE-2021-21501?
CVE-2021-21501 is a security vulnerability in Github.com/apache/servicecomb service center involving Path traversal in ServiceCenter under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/apache/servicecomb service center versions are affected?
Affected versions include releases prior to 2.0.0 across affected packages: github.com/apache/servicecomb-service-center.
What version fixes CVE-2021-21501?
Upgrading to 2.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/apache/servicecomb-service-center affected?
Yes, github.com/apache/servicecomb-service-center is affected in releases prior to 2.0.0. Upgrade your dependency to 2.0.0 or later.
What is the CVSS score of CVE-2021-21501?
CVE-2021-21501 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:H/I:N/A:N.
What CWE is associated with CVE-2021-21501?
CVE-2021-21501 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 Go dependencies for CVE-2021-21501?
Run the dependency tree command: 'inspect dependencies for github.com/apache/servicecomb-service-center'. 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-x6jv-5vfg-gm7x",
  "modified" : "2023-04-24T19:05:13Z",
  "published" : "2021-09-01T18:35:52Z",
  "aliases" : [ "CVE-2021-21501" ],
  "summary" : "Path traversal in ServiceCenter",
  "details" : "Improper configuration will cause ServiceComb ServiceCenter Directory Traversal problem in ServcieCenter 1.x.x versions and fixed in 2.0.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/apache/servicecomb-service-center"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21501"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/servicecomb-service-center/pull/788"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/servicecomb-service-center/commit/f4f44fe5d4a7e530ca8ee7c6f2c9e891ae8353c9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/servicecomb-service-center"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r337be65e504eac52a12e89d7de40345e5d335deee9dd7288f7f59b81%40%3Cdev.servicecomb.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2021/08/10/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-30T19:32:48Z",
    "nvd_published_at" : "2021-08-10T10:15:00Z"
  }
}