SB2023061904 - Multiple vulnerabilities in OpenSMTPD

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Main Vulnerability Database SB2023061904

SB2023061904 - Multiple vulnerabilities in OpenSMTPD

Published: June 19, 2023

Security Bulletin ID SB2023061904
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Resource management error (CVE-ID: N/A)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in smtpd(8) when handling connections from a local, scoped ipv6 address. A local user can send commands to the SMTP server and perform a denial of service (DoS) attack.


2) Out-of-bounds read (CVE-ID: N/A)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in libc resolver. A remote attacker can trigger an out-of-bounds read error and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References