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

Quick assessment

Affected
capnproto capnproto
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

capnproto是capnproto开源的一个 Proto 序列化/RPC 系统-核心工具和C++库 capnproto存在缓冲区错误漏洞，该漏洞源于其处理list to list的操作存在逻辑错误导致越界读取。

CVSS 5.4 · Medium EPSS 0.89% · P58
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I. Basic Information for CVE-2022-46149

Vulnerability Information
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Vulnerability Title
Cap'n Proto vulnerable to out-of-bounds read due to logic error handling list-of-list.
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
capnproto 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
capnproto是capnproto开源的一个 Proto 序列化/RPC 系统-核心工具和C++库 capnproto存在缓冲区错误漏洞，该漏洞源于其处理list to list的操作存在逻辑错误导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
capnproto capnproto < 0.7.1 -

II. Public POCs for CVE-2022-46149

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III. Intelligence Information for CVE-2022-46149

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Patches & Fixes for CVE-2022-46149 (1)

Vendor Advisories for CVE-2022-46149 (1)

Mailing List Discussions for CVE-2022-46149 (4)

IV. Related Vulnerabilities

Same product: capnproto
Same vendor: capnproto
Same weakness: CWE-125

V. Comments for CVE-2022-46149

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