Amazon Linux AMI update for protobuf-c

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

Update the affected packages:

aarch64:
    protobuf-c-compiler-debuginfo-1.4.1-2.amzn2023.0.2.aarch64
    protobuf-c-debuginfo-1.4.1-2.amzn2023.0.2.aarch64
    protobuf-c-debugsource-1.4.1-2.amzn2023.0.2.aarch64
    protobuf-c-devel-1.4.1-2.amzn2023.0.2.aarch64
    protobuf-c-1.4.1-2.amzn2023.0.2.aarch64
    protobuf-c-compiler-1.4.1-2.amzn2023.0.2.aarch64

src:
    protobuf-c-1.4.1-2.amzn2023.0.2.src

x86_64:
    protobuf-c-compiler-debuginfo-1.4.1-2.amzn2023.0.2.x86_64
    protobuf-c-debuginfo-1.4.1-2.amzn2023.0.2.x86_64
    protobuf-c-debugsource-1.4.1-2.amzn2023.0.2.x86_64
    protobuf-c-devel-1.4.1-2.amzn2023.0.2.x86_64
    protobuf-c-1.4.1-2.amzn2023.0.2.x86_64
    protobuf-c-compiler-1.4.1-2.amzn2023.0.2.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

protobuf-c: before 1.4.1-2

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:protobuf-c:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-086.html

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.