Vulnerability identifier: #VU71974
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:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Rack
Web applications /
Modules and components for CMS
Vendor: Rack
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources within the get_byte_ranges() function in lib/rack/utils.rb when parsing the Range header. 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
Rack: 3.0.0 - 3.0.4, 2.2.0 - 2.2.6, 2.1.0 - 2.1.4.1, 2.0 - 2.0.9.1
External links
http://github.com/rack/rack/commit/7a9d76a7850455a5ef9403203ea757ed110e7806
http://bugzilla.redhat.com/show_bug.cgi?id=2164719
http://bugzilla.suse.com/show_bug.cgi?id=1207597
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.