CVE-2023-51437highCWE-203

CVE-2023-51437: high-severity vulnerability in Apache Pulsar

Apache Pulsar: Timing attack in SASL token signature verification

Published · Updated

Follow this CVE+ Monitor Apache Pulsar+ Monitor org.apache.pulsar:pulsar-broker-auth-sasl

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.4epss 0.8%
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/ .
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Apache Software Foundation · Apache Pulsar
Related CVEs — Apache Pulsar

In the same product, most dangerous first.

CVE-2024-27317HIGHApache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File ModificationEPSS 56.9%CVE-2021-22160—Authentication with JWT allows use of “none”-algorithmEPSS 52.9%CVE-2024-27135HIGHApache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code ExecutionEPSS 6.0%CVE-2024-27894HIGHApache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS ProxyingEPSS 1.9%CVE-2022-34321HIGHApache Pulsar: Improper Authentication for Pulsar Proxy Statistics EndpointEPSS 1.8%CVE-2021-41571—Pulsar Admin API allows access to data from other tenants using getMessageById APIEPSS 1.7%