CVE-2022-46149
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0.9.2-2 |
| debian | bullseye | affected | |
| debian | forky | fixed | 0.9.2-2 |
| debian | sid | fixed | 0.9.2-2 |
| debian | trixie | fixed | 0.9.2-2 |
| sles | affected | |
References
- https://github.com/capnproto/capnproto/tree/master/security-advisories/2022-11-30-0-pointer-list-bounds.md
- https://security-tracker.debian.org/tracker/CVE-2022-46149
- https://www.suse.com/security/cve/CVE-2022-46149.html
- https://github.com/capnproto/capnproto/security/advisories/GHSA-qqff-4vw4-f6hx
- https://nvd.nist.gov/vuln/detail/CVE-2022-46149
- https://github.com/capnproto/capnproto/commit/25d34c67863fd960af34fc4f82a7ca3362ee74b9
- https://dwrensha.github.io/capnproto-rust/2022/11/30/out_of_bounds_memory_access_bug.html
- https://github.com/capnproto/capnproto
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EAHKLUMJAXJEV5BPBS5XXWBQ3ZTHGOLY
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTS6TWD6K2NKXLEEFBPROQXMOFUTEYWY
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WKXM4JAFXLTXU5IQB3OUBQVCIICZWGYX
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZOCQQOPMVQOFUWBWAGVGN76OYAV3WXY4
- https://rustsec.org/advisories/RUSTSEC-2022-0068.html
- https://crates.io/crates/capnp
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.