This security advisory describes one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in ActiveStorage's S3 adapter. A remote attacker can control the Content-Length of an S3 direct upload URL without receiving a new signature from the server and perform a denial of service (DoS) attack.Mitigation
Install updates from vendor's website.Vulnerable software versions
activestorage: 5.2.0, 5.2.0.beta1, 5.2.0.beta2, 5.2.0.rc1, 5.2.0.rc2, 5.2.1, 22.214.171.124, 5.2.1.rc1, 5.2.2, 126.96.36.199, 5.2.2.rc1, 5.2.3, 5.2.3.rc1, 5.2.4, 188.8.131.52, 184.108.40.206, 5.2.4.rc1, 6.0.0, 6.0.0.beta1, 6.0.0.beta2, 6.0.0.beta3, 6.0.0.rc1, 6.0.0.rc2, 6.0.1, 6.0.1.rc1, 6.0.2, 220.127.116.11, 18.104.22.168, 6.0.2.rc1, 6.0.2.rc2, 6.0.3, 6.0.3.rc1CPE
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.