Vulnerability identifier: #VU70537

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-46149

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cap'n Proto
Universal components / Libraries / Programming Languages & Components
capnproto-rust
Universal components / Libraries / Programming Languages & Components

Vendor: capnproto

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the list-of-list logic. A remote attacker can pass specially crafted data to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cap'n Proto: 0.10.0 - 0.10.2, 0.9.0 - 0.9.1, 0.8.0, 0.7.0

capnproto-rust: 0.15.0 - 0.15.1, 0.14.0 - 0.14.10, 0.13.0 - 0.13.6

---

External links
http://github.com/capnproto/capnproto/commit/25d34c67863fd960af34fc4f82a7ca3362ee74b9
http://github.com/capnproto/capnproto/security/advisories/GHSA-qqff-4vw4-f6hx
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WKXM4JAFXLTXU5IQB3OUBQVCIICZWGYX/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZOCQQOPMVQOFUWBWAGVGN76OYAV3WXY4/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EAHKLUMJAXJEV5BPBS5XXWBQ3ZTHGOLY/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTS6TWD6K2NKXLEEFBPROQXMOFUTEYWY/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.