#VU54854 Infinite loop in Apache Commons Compress

Published: 2021-07-14

Vulnerability identifier: #VU54854

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-35515


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Commons Compress
Universal components / Libraries / Libraries used by multiple products

Vendor: Apache Foundation


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

The vulnerability exists due to infinite loop when processing 7Z archives. A remote attacker can consume all available system resources and cause denial of service conditions.

Install updates from vendor's website.

Vulnerable software versions

Apache Commons Compress: 1.6 - 1.20

External links

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