Cap'n Proto is a data interchange format and remote procedure call (RPC) system. Cap'n Proro prior to versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3, as well as versions of Cap'n Proto's Rust implementation prior to 0.13.7, 0.14.11, and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable, an application must perform a specific sequence of actions, described in the GitHub Security Advisory. The bug is present in inlined code, therefore the fix will require rebuilding dependent applications. Cap'n Proto has C++ fixes available in versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3. The `capnp` Rust crate has fixes available in versions 0.13.7, 0.14.11, and 0.15.2.
History

Wed, 23 Apr 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-11-30T00:00:00.000Z

Updated: 2025-04-23T16:33:43.499Z

Reserved: 2022-11-28T00:00:00.000Z

Link: CVE-2022-46149

cve-icon Vulnrichment

Updated: 2024-08-03T14:24:03.395Z

cve-icon NVD

Status : Modified

Published: 2022-11-30T17:15:10.097

Modified: 2024-11-21T07:30:12.407

Link: CVE-2022-46149

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-11-30T00:00:00Z

Links: CVE-2022-46149 - Bugzilla