#VU80783 Incorrect Conversion between Numeric Types in Okio - CVE-2023-3635

Vulnerability identifier: #VU80783

Vulnerability risk: Medium

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

CVE-ID: CVE-2023-3635

CWE-ID: CWE-681

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Okio
Mobile applications / Libraries for mobile applications

Vendor:

Description

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

The vulnerability exists due to GzipSource does not handle an exception that might be raised when parsing a malformed gzip buffer. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://github.com/square/okio/commit/81bce1a30af244550b0324597720e4799281da7b
http://research.jfrog.com/vulnerabilities/okio-gzip-source-unhandled-exception-dos-xray-523195/

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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.