Libspf2
Vulnerabilities
2
Known exploited
0
Max CVSS
9.8
Top EPSS
0.51474
Severity breakdown
Critical
1
High
1
Medium
0
Low
0
Affected version ranges
< 1.2.11
Also matched as (raw): libspf2
Top vulnerabilities
CVE-2021-20314Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages.
CVE-2023-42118Exim 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.