// For flags

CVE-2023-4874

Undefined Behavior for Input to API in Mutt

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Null pointer dereference when viewing a specially crafted email in Mutt >1.5.2 <2.2.12

Eliminación de referencia del puntero nulo al ver un correo electrónico especialmente manipulado en Mutt versiones &gt;1.5.2 y &lt;2.2.12

A null pointer dereference flaw was found in mutt when handling specially crafted characters. This issue could allow an attacker to send a specially crafted email that causes the email client to crash when reading or processing the email.

USN-6374-1 fixed vulnerabilities in Mutt. This update provides the corresponding updates for Ubuntu 23.10. It was discovered that Mutt incorrectly handled certain email header contents. If a user were tricked into opening a specially crafted message, a remote attacker could possibly use this issue to cause a denial of service.

*Credits: Chenyuan Mi, Kevin McCarthy
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-09-09 CVE Reserved
  • 2023-09-09 CVE Published
  • 2024-08-30 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-475: Undefined Behavior for Input to API
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mutt
Search vendor "Mutt"
 Mutt
Search vendor "Mutt" for product "Mutt"
 > 1.5.2 < 2.2.12
Search vendor "Mutt" for product "Mutt" and version " > 1.5.2 < 2.2.12"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 12.0
Search vendor "Debian" for product "Debian Linux" and version "12.0"
-
Affected