CVE-2023-51437 Apache Pulsar: Timing attack in SASL token signature verification

2024-02-0709:18:19

CWE-203

apache

www.cve.org

apache pulsar

timing attack

sasl

signature verification

upgrade

vulnerability

authentication

component

cve-2023-51437

CVSS3

7.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.001

Percentile

34.6%

JSON

Observable timing discrepancy vulnerability in Apache Pulsar SASL Authentication Provider can allow an attacker to forge a SASL Role Token that will pass signature verification.
Users are recommended to upgrade to version 2.11.3, 3.0.2, or 3.1.1 which fixes the issue. Users should also consider updating the configured secret in the saslJaasServerRoleTokenSignerSecretPath file.

Any component matching an above version running the SASL Authentication Provider is affected. That includes the Pulsar Broker, Proxy, Websocket Proxy, or Function Worker.

2.11 Pulsar users should upgrade to at least 2.11.3.
3.0 Pulsar users should upgrade to at least 3.0.2.
3.1 Pulsar users should upgrade to at least 3.1.1.
Any users running Pulsar 2.8, 2.9, 2.10, and earlier should upgrade to one of the above patched versions.

For additional details on this attack vector, please refer to https://codahale.com/a-lesson-in-timing-attacks/ .

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Apache Pulsar",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThanOrEqual": "2.10.5",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "2.11.2",
        "status": "affected",
        "version": "2.11.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "3.0.1",
        "status": "affected",
        "version": "3.0.0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.1.0"
      }
    ]
  }
]