#VU98715 Resource exhaustion in OkHttp - CVE-2023-3782


Vulnerability identifier: #VU98715

Vulnerability risk: Medium

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

CVE-ID: CVE-2023-3782

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OkHttp
Mobile applications / Libraries for mobile applications

Vendor: Square

Description

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

The vulnerability occurs when using a BrotliInterceptor and surfing to a malicious web server, or when an attacker can perform MitM to inject a Brotli zip-bomb into an HTTP response. 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

OkHttp: All versions


External links
http://research.jfrog.com/vulnerabilities/okhttp-client-brotli-dos/
http://github.com/square/okhttp/issues/7738


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.


Latest bulletins with this vulnerability