Riskcovery

CVE-2023-51437

Apache Pulsar: Timing attack in SASL token signature verification

State
Published
Severity
7.4 High
Published
Feb 7, 2024
Updated
Aug 2, 2024
Reserved
Dec 19, 2023

Read the record on cve.org

Description

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/ .

Scores

CVSSScoreVectorSource
3.17.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Napache

Weaknesses

Affected Products

ProductVersions
Apache PulsarApache Software Foundation
  • 2.10.5 and earlierAffected
  • 2.11.0 through 2.11.2Affected
  • 3.0.0 through 3.0.1Affected
  • 3.1.0Affected

References

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