High severity · published Nov 26, 2019
CVE-2019-16201
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
7.5
CVSS
5.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
RU
Ruby · Ruby-lang
2.4.0 through 2.4.7; 2.5.0 through 2.5.6; 2.6.0 through 2.6.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16201
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-16201
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html
Third Party Advisory
https://hackerone.com/reports/661722
Mailing List
https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
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