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5 vulnerabilities by opensmtpd

CVE-2023-29323 (GCVE-0-2023-29323)

Vulnerability from cvelistv5 – Published: 2023-04-04 00:00 – Updated: 2025-11-04 18:14
VLAI?

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CVE-2020-35679 (GCVE-0-2020-35679)

Vulnerability from cvelistv5 – Published: 2020-12-24 15:53 – Updated: 2024-08-04 17:09
VLAI?
Summary
smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
Show details on NVD website

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CVE-2020-35680 (GCVE-0-2020-35680)

Vulnerability from cvelistv5 – Published: 2020-12-24 15:53 – Updated: 2024-08-04 17:09
VLAI?
Summary
smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
Show details on NVD website

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CVE-2020-8794 (GCVE-0-2020-8794)

Vulnerability from cvelistv5 – Published: 2020-02-25 16:38 – Updated: 2024-08-04 10:12
VLAI?
Summary
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
Show details on NVD website

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CVE-2020-8793 (GCVE-0-2020-8793)

Vulnerability from cvelistv5 – Published: 2020-02-25 16:22 – Updated: 2024-08-04 10:12
VLAI?
Summary
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
https://www.openbsd.org/security.html x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/02/24/4 mailing-listx_refsource_MLIST
http://seclists.org/fulldisclosure/2020/Feb/28 mailing-listx_refsource_FULLDISC
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://usn.ubuntu.com/4294-1/ vendor-advisoryx_refsource_UBUNTU
Show details on NVD website

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