SecuriTricks - CVE-2023-42118

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/

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

CVE-2023-42118