🛡️ OESA-2024-2584 — libspf2

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

libspf2 security update libspf2 is an implementation of the SPF (Sender Policy Framework) specification as found at: http://www.ietf.org/internet-drafts/draft-mengwong-spf-00.txt SPF allows email systems to check SPF DNS records and make sure that an email is authorized by the administrator of the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers, and email viruses/worms. Security Fix(es): 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.(CVE-2023-42118)

Affected software and timeline

Affected software: libspf2 (fixed in 1.2.11-2.oe2203sp4). Published on 27 December 2024 and last revised on 3 September 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-12-27
Updated 2026-08-12
Modified 2025-09-03
Fix URL N/A

Affected Packages

Software From version Fixed in
libspf2 — 1.2.11-2.oe2203sp4

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More OESA 2024 advisories

Part of OESA 2024 in the advisory index.