CVE-2022-46149 Cap'n Proto vulnerable to out-of-bounds read due to logic error handling list-of-list.

2022-11-3000:00:00

CWE-125

GitHub_M

www.cve.org

cap'n proto

out-of-bounds read

logic error

list-of-list

remote procedure call

rpc

data interchange format

memory exfiltration

cve-2022-46149

fix

c++

rust

github security advisory

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L

AI Score

5.5

Confidence

High

EPSS

0.002

Percentile

51.6%

JSON

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.

CNA Affected

[
  {
    "vendor": "capnproto",
    "product": "capnproto",
    "versions": [
      {
        "version": "< 0.7.1",
        "status": "affected"
      },
      {
        "version": ">= 0.8.0, < 0.8.1",
        "status": "affected"
      },
      {
        "version": ">= 0.9.0, < 0.9.2",
        "status": "affected"
      },
      {
        "version": ">= 0.10.0, < 0.10.3",
        "status": "affected"
      },
      {
        "version": ">= 0.13.0, < 0.13.7",
        "status": "affected"
      },
      {
        "version": ">= 0.14.0, < 0.14.11",
        "status": "affected"
      },
      {
        "version": ">= 0.15.0, < 0.15.2",
        "status": "affected"
      }
    ]
  }
]