#VU51718 Integer overflow in gSOAP - CVE-2021-21783

Vulnerability identifier: #VU51718

Vulnerability 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-2021-21783

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gSOAP
Universal components / Libraries / Libraries used by multiple products

Vendor: Genivia Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the WS-Addressing plugin functionality. A remote attacker can send a specially crafted SOAP request, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gSOAP: 2.8.109 - 2.8.110

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External links
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1245

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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.