CVE-2019-16201
HIGH severity · CVSS 7.5 · Improper authentication
7.5CVSS HIGH
Summary
WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)5%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html
- https://hackerone.com/reports/661722Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00025.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
- https://seclists.org/bugtraq/2019/Dec/31
- https://seclists.org/bugtraq/2019/Dec/32