CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
Products
Dovecot
Source
security@open-xchange.com
Tags
CVE-2024-23184 details
Last Modified : Sept. 10, 2024, 3:50 p.m.
Description
Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive. With 100k header lines CPU usage is already 12 seconds, and in a production environment we observed 500k header lines taking 18 minutes to parse. Since this can be triggered by external actors sending emails to a victim, this is a security issue. An external attacker can send specially crafted messages that consume target system resources and cause outage. One can implement restrictions on address headers on MTA component preceding Dovecot. No publicly available exploits are known.
CVSS Score
| 1 | 2 | 3 | 4 | 5.0 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. |
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Base Score
5.0
Exploitability Score
3.1
Impact Score
1.4
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
References
| URL | Source |
|---|---|
| https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2024/oxdc-adv-2024-0002.json | security@open-xchange.com |