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6 vulnerabilities found for libspf2 by libspf2_project
CVE-2023-42118 (GCVE-0-2023-42118)
Vulnerability from nvd – Published: 2024-05-03 02:13 – Updated: 2025-03-28 12:04
VLAI
Title
Exim libspf2 Integer Underflow Remote Code Execution Vulnerability
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| http://www.openwall.com/lists/oss-security/2025/03/28/1 |
Impacted products
Date Public
2023-09-27 22:21
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CVE-2021-33913 (GCVE-0-2021-33913)
Vulnerability from nvd – Published: 2022-01-19 00:00 – Updated: 2024-08-04 00:05
VLAI
Summary
libspf2 before 1.2.11 has a heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of SPF_record_expand_data in spf_expand.c. The amount of overflowed data depends on the relationship between the length of an entire domain name and the length of its leftmost label. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
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CVE-2021-33912 (GCVE-0-2021-33912)
Vulnerability from nvd – Published: 2022-01-19 00:00 – Updated: 2024-08-04 00:05
VLAI
Summary
libspf2 before 1.2.11 has a four-byte heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
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CVE-2023-42118 (GCVE-0-2023-42118)
Vulnerability from cvelistv5 – Published: 2024-05-03 02:13 – Updated: 2025-03-28 12:04
VLAI
Title
Exim libspf2 Integer Underflow Remote Code Execution Vulnerability
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| http://www.openwall.com/lists/oss-security/2025/03/28/1 |
Impacted products
Date Public
2023-09-27 22:21
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CVE-2021-33913 (GCVE-0-2021-33913)
Vulnerability from cvelistv5 – Published: 2022-01-19 00:00 – Updated: 2024-08-04 00:05
VLAI
Summary
libspf2 before 1.2.11 has a heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of SPF_record_expand_data in spf_expand.c. The amount of overflowed data depends on the relationship between the length of an entire domain name and the length of its leftmost label. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
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CVE-2021-33912 (GCVE-0-2021-33912)
Vulnerability from cvelistv5 – Published: 2022-01-19 00:00 – Updated: 2024-08-04 00:05
VLAI
Summary
libspf2 before 1.2.11 has a four-byte heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
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