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EUVD-2026-233377

fkie_cve-2022-46149

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.

GHSA-qqff-4vw4-f6hx — Cap'n Proto and its Rust implementation vulnerable to out-of-bounds read due to logic error handling list-of-list

Affected: crates.io: capnp

The Cap'n Proto library and capnp Rust package are vulnerable to out-of-bounds read due to logic error handling list-of-list. If a message consumer expects data of type "list of pointers", and if the consumer performs certain specific actions on such data, then a message producer can cause the consumer to read out-of-bounds memory. This could trigger a process crash in the consumer, or in some cases could allow exfiltration of private in-memory data.

Impact ======

- Remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. - Possible exfiltration of memory, 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 below. At present, **we are not aware of any vulnerable application**, but we advise updating regardless.

Fixed in ========

Unfortunately, the bug is present in inlined code, therefore the fix will require rebuilding dependent applications.

C++ fix:

- git commit [25d34c67863fd960af34fc4f82a7ca3362ee74b9][0] - release 0.11 (future) - release 0.10.3: - Unix: https://capnproto.org/capnproto-c++-0.10.3.tar.gz - Windows: https://capnproto.org/capnproto-c++-win32-0.10.3.zip - release 0.9.2: - Unix: https://capnproto.org/capnproto-c++-0.9.2.tar.gz - Windows: https://capnproto.org/capnproto-c++-win32-0.9.2.zip - release 0.8.1: - Unix: https://capnproto.org/capnproto-c++-0.8.1.tar.gz…

gsd-2022-46149

openSUSE-SU-2024:12543-1 — capnproto-0.10.3-1.1 on GA media

capnproto-0.10.3-1.1 on GA media

RHSA-2023:1408 — Red Hat Security Advisory: OpenShift Container Platform 4.12.9 packages and security update

capnproto: out of bounds read when handling a list of lists.

RUSTSEC-2022-0068 — out-of-bounds read possible when setting list-of-pointers

Affected: crates.io: capnp

If a message consumer expects data of type "list of pointers", and if the consumer performs certain specific actions on such data, then a message producer can cause the consumer to read out-of-bounds memory. This could trigger a process crash in the consumer, or in some cases could allow exfiltration of private in-memory data.

The C++ Cap'n Proto library is also affected by this bug. See the [advisory](https://github.com/capnproto/capnproto/tree/master/security-advisories/2022-11-30-0-pointer-list-bounds.md) on the main Cap'n Proto repo for a succinct description of the exact circumstances in which the problem can arise.

UBUNTU-CVE-2022-46149

Affected: Ubuntu:14.04:LTS: capnproto, Ubuntu:16.04:LTS: capnproto, Ubuntu:16.04:LTS: interchange, Ubuntu:Pro:18.04:LTS: capnproto, Ubuntu:Pro:20.04:LTS: capnproto, Ubuntu:22.04:LTS: capnproto

WID-SEC-W-2023-0775 — Red Hat OpenShift: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat OpenShift ausnutzen, um einen Denial of Service Angriff durchzuführen oder Informationen offenzulegen.