CVE-2022-46149
out-of-bounds read possible when setting list-of-pointers
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.
How to fix CVE-2022-46149
To remediate CVE-2022-46149, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 0.14.11-1.1 or later
- —upgrade to 0.15.2 or later
- —upgrade to 0.13.7 or later
Is CVE-2022-46149 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0
- from 0, < 0.14.11-1.1
- >= 0.15.0, < 0.15.2
- >= 0.0.0-0, < 0.13.7, >= 0.14.0-0, < 0.14.11, >= 0.15.0-0, < 0.15.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L |