CVE-2020-15106 (Medium) detected in github.com/etcd-io/etcd-v3.1.20, github.com/etcd-io/etcd/wal-v3.1.20

[mend-for-github-com]

CVE-2020-15106 - Medium Severity Vulnerability

Vulnerable Libraries - github.com/etcd-io/etcd-v3.1.20, github.com/etcd-io/etcd/wal-v3.1.20

github.com/etcd-io/etcd-v3.1.20

Distributed reliable key-value store for the most critical data of a distributed system

Dependency Hierarchy:

• github.com/google/certificate-transparency-go-v1.1.1 (Root Library)
  • github.com/etcd-io/etcd-v3.3.25
    • ❌ github.com/etcd-io/etcd-v3.1.20 (Vulnerable Library)

github.com/etcd-io/etcd/wal-v3.1.20

Distributed reliable key-value store for the most critical data of a distributed system

Dependency Hierarchy:

• github.com/google/certificate-transparency-go-v1.1.1 (Root Library)
  • github.com/etcd-io/etcd-v3.3.25
    • github.com/etcd-io/etcd-v3.1.20
      • github.com/etcd-io/etcd/etcdserver-v3.1.20
        • ❌ github.com/etcd-io/etcd/wal-v3.1.20 (Vulnerable Library)

Found in HEAD commit: 549c2321b216d811654d8e364e811dbca812a5a6

Found in base branch: master

Vulnerability Details

In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of a record is stored in the length field of a WAL file and no additional validation is done on this data. Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.

Publish Date: 2020-08-05

URL: CVE-2020-15106

CVSS 3 Score Details (6.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: etcd-io/etcd@v3.4.9...v3.4.10

Release Date: 2020-07-21

Fix Resolution: 3.4.10, 3.3.23