Improper validation of array index in GoGo Protobuf

1) Improper Validation of Array Index

EUVDB-ID: #VU52902

Risk: High

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-3121

CWE-ID: CWE-129 - Improper Validation of Array Index

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper validation of index array in plugin/unmarshal/unmarshal.go. A remote attacker can pass specially crafted data to the application and bypass implemented security restrictions, possibly leading to remote code execution.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Protobuf: 0.1 - 1.3.1

CPE2.3

• cpe:2.3:a:gogoprotobuf:protobuf:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:gogoprotobuf:protobuf:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:gogoprotobuf:protobuf:0.3:*:*:*:*:*:*:*

External links

https://github.com/gogo/protobuf/commit/b03c65ea87cdc3521ede29f62fe3ce239267c1bc
https://github.com/gogo/protobuf/compare/v1.3.1...v1.3.2
https://lists.apache.org/thread.html/r88d69555cb74a129a7bf84838073b61259b4a3830190e05a3b87994e@%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rc1e9ff22c5641d73701ba56362fb867d40ed287cca000b131dcf4a44@%3Ccommits.pulsar.apache.org%3E
https://security.netapp.com/advisory/ntap-20210219-0006/

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.