CVE-2023-42118

May 3, 2024, 12:49 p.m.

7.5
High

Description

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17578.

Product(s) Impacted

Product Versions
Exim

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1472/

Tags

zdi-disclosures@trendmicro.com
2024-05-03
CVE-2023-42118
CWE-191

CVSS Score

7.5 / 10

CVSS Data - 3.0

  • Attack Vector: ADJACENT_NETWORK
  • Attack Complexity: HIGH
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

    • CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

    View Vector String

Timeline

Published: May 3, 2024, 3:15 a.m.
Last Modified: May 3, 2024, 12:49 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

zdi-disclosures@trendmicro.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.