0day.today - Biggest Exploit Database in the World.
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn
GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Contact us
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
ModSecurity 3.0.x Denial Of Service Vulnerability
Author
Risk
[Security Risk Medium
]0day-ID
Category
Date add
CVE
Platform
ModSecurity v3.0.x is affected by a Denial of Service vulnerability due to the
global matching of regular expressions. The combination of a non-anchored
regular expression and the ModSecurity “capture” action can be exploited via a
specially crafted payload.
While ModSecurity v2.x used to quit the execution of a regular expression
after the first match. ModSecurity v3.0.x silently changed the behavior to
global matching. This results in a DoS for existing non-anchored regexes in
rules containing the “capture” action. It also fills the TX variable space
beyond the documented limit of 10 instances. The defense is handicapped due to
the absence of the SecRequestBodyNoFilesLimit directive. The vendor Trustwave
Spiderlabs dropped this functionality for ModSecurity v3.
The vendor did not publish a new release, but there is a patch that brings
back the former behavior.
CVSSv3: 7.5 HIGH
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H&version=3.1
Exploitability Metrics:
* Attack Vector: Network
* Attack Complexity: Low
* Priviledges Required: None
* User Interaction: None
* Scope: Unchanged
Impact Metrics:
* Confidentiality Impact: None
* Integrity Impact: None
* Availability Impact: High
Weakness Enumeration: CWE-400: Uncontrolled Resource Consumption
Known Affected Software Configurations:
ModSecurity v3.0.0
ModSecurity v3.0.1
ModSecurity v3.0.2
ModSecurity v3.0.3
ModSecurity v3.0.4 (patch for this version available
More Information: https://coreruleset.org/20200914/cve-2020-15598/
# 0day.today [2024-11-15] #