CVE-2023-51765

sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports . but some other...

CVE-2023-51764

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpddatarestrictions=rejectunauthpipelining and smtpddiscardehlokeywords=chunking or certain other options that exist in recent versions. Remote attackers can use a published exploitation technique to inject e-mail messages with ...

CVE-2023-51764

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpddatarestrictions=rejectunauthpipelining and smtpddiscardehlokeywords=chunking or certain other options that exist in recent versions. Remote attackers can use a published exploitation technique to inject e-mail messages with ...

CVE-2023-51765

CVE-2023-51765 affects sendmail up to 8.17.2, enabling SMTP smuggling via non-standard line endings that can spoof MAIL FROM and bypass SPF. The issue is mitigated by upgrading to 8.18.x or later (noted to enforce stricter RFC compliance, e.g., with srv_features). Several vendors have released fi...

CVE-2023-51766

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports . but...

CVE-2023-51765

sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports . but some other...

CVE-2023-51764

Postfix CVE-2023-51764 affects Postfix versions prior to fixed releases (e.g., 3.8.5 and earlier patched lines) and allows SMTP smuggling via non-standard end-of-data handling, enabling spoofed MAIL FROM and SPF bypass. Public advisories (ALMA/AMAZON/Linux distributions and Debian LTS) confirm th...

CVE-2023-51764

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpddatarestrictions=rejectunauthpipelining and smtpddiscardehlokeywords=chunking or certain other options that exist in recent versions. Remote attackers can use a published exploitation technique to inject e-mail messages with ...

CVE-2023-51766

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports . but...

CVE-2023-51766

Exim before 4.97.1 is vulnerable to SMTP smuggling in specific PIPELINING/CHUNKING configurations, enabling a remote attacker to inject messages with a spoofed MAIL FROM and bypass SPF. The root cause cited across multiple sources is that Exim handles end-of-data sequences using . in ways that so...

CVE-2023-51764

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpddatarestrictions=rejectunauthpipelining and smtpddiscardehlokeywords=chunking or certain other options that exist in recent versions. Remote attackers can use a published exploitation technique to inject e-mail messages with ...

CVE-2023-51766

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports . but...

CVE-2023-51765

sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports . but some other...

CVE-2023-51766

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports . but...

Fedora: Security Advisory (FEDORA-2023-b317dd9220)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] Fedora 39 Update: libspf2-1.2.11-11.20210922git4915c308.fc39

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...

Spoofy - Program That Checks If A List Of Domains Can Be Spoofed Based On SPF And DMARC Records

Spoofy is a program that checks if a list of domains can be spoofed based on SPF and DMARC records. You may be asking, "Why do we need another tool that can check if a domain can be spoofed?" Well, Spoofy is different and here is why: 1. Authoritative lookups on all lookups with known fallback...

Fedora: Security Advisory for libspf2 (FEDORA-2023-ae340c92ea)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] Fedora 38 Update: libspf2-1.2.11-11.20210922git4915c308.fc38

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...

[SECURITY] Fedora 37 Update: libspf2-1.2.11-11.20210922git4915c308.fc37

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...