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CVE
PUBLISHED

CVE-2023-51437

Apache Pulsar: Timing attack in SASL token signature verification

Assignerapache
Reserved2023-12-19
Published2024-02-07
Updated2024-07-05

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/ .



HIGH: 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

Default status
unaffected

Any version
affected

2.11.0
affected

3.0.0
affected

3.1.0
affected

Credits

Yiheng Cao finder

Chenhao Lu finder

Kaifeng Huang finder

References

https://lists.apache.org/thread/5kgmvvolf5tzp5rz9xjwfg2ncwvqqgl5 vendor-advisory

http://www.openwall.com/lists/oss-security/2024/02/07/1

cve.org CVE-2023-51437

nvd.nist.gov CVE-2023-51437

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