Vulnerability identifier: #VU65855

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-33070

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
protobuf-c
Other software / Other software solutions

Vendor: protobuf-c

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the parse_tag_and_wiretype() function in protobuf-c/protobuf-c.c. A remote attacker can trick the victim to open a specially crafted file, cause an invalid arithmetic shift and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

protobuf-c: 0.15 - 1.4.0

---

External links
http://github.com/protobuf-c/protobuf-c/pull/508
http://github.com/protobuf-c/protobuf-c/issues/506

---

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.