Resource exhaustion in Square OkHttp



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-3782
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 OkHttp
Mobile applications / Libraries for mobile applications

Vendor Square

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU98715

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3782

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

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 update from vendor's website.

Vulnerable software versions

OkHttp: All versions

CPE2.3 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.



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