CVE-2023-51437 is a timing discrepancy vulnerability in Apache Pulsar's SASL Authentication Provider, affecting versions 2.8 through 3.1.0, including the Broker, Proxy, Websocket Proxy, and Function Worker components. An attacker can exploit this to forge SASL Role Tokens that bypass signature verification. This vulnerability has a CVSS score of 7.4 (HIGH), indicating a network-based attack with high impact on confidentiality and integrity, but requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog. Users are advised to upgrade to Pulsar versions 2.11.3, 3.0.2, or 3.1.1 and update the configured secret.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.10.5CPE matchmatch criteria | cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:* | ||
>= 2.11.0, < 2.11.3CPE matchmatch criteria | cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:* | ||
>= 3.0.0, < 3.0.2CPE matchmatch criteria | cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:* | ||
3.1.0CPE matchmatch criteria | cpe:2.3:a:apache:pulsar:3.1.0:-:*:*:*:*:*:* | ||
3.1.0CPE matchmatch criteria | cpe:2.3:a:apache:pulsar:3.1.0:candidate_1:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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