Denial of service in Protobuf-c

Published: 2022-07-28 | Updated: 2023-04-25

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-33070 CVE-2022-48468
CWE-ID	CWE-20 CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	protobuf-c Other software / Other software solutions
Vendor	protobuf-c

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU65855

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-33070

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

CPE2.3

External links

https://github.com/protobuf-c/protobuf-c/pull/508
https://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.

2) Integer overflow

EUVDB-ID: #VU75482

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-48468

CWE-ID: CWE-190 - Integer overflow