Linux Distros Unpatched Vulnerability : CVE-2021-37845

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTL...

Linux Distros Unpatched Vulnerability : CVE-2021-33900

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - While investigating DIRSTUDIO-1219 it was noticed that configured StartTLS encryption was not applied when any SASL authentication mechanism DIGEST-MD5, GSSAPI...

An unintended cleartext issue exists in Go before 1.8.4 and 1.9.x before 1.9.1. RFC 4954 requires that, during SMTP, the PLAIN auth scheme must only be used on network connections secured with TLS. The original implementation of smtp.PlainAuth in Go 1.0 enforced this requirement, and it was documented to do so. In 2013, upstream issue #5184, this was changed so that the server may decide whether PLAIN is acceptable. The result is that if you set up a man-in-the-middle SMTP server that doesn't advertise STARTTLS and does advertise that PLAIN auth is OK, the smtp.PlainAuth implementation sends the username and password.

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Linux Distros Unpatched Vulnerability : CVE-2020-15917

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled. CVE-2020-15917 Note that Nessus relies o...

Linux Distros Unpatched Vulnerability : CVE-2020-15953

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - LibEtPan through 1.9.4, as used in MailCore 2 through 0.6.3 and other products, has a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server...

Linux Distros Unpatched Vulnerability : CVE-2024-34083

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted comman...

USN-8478-1 ruby2.7, ruby3.0, ruby3.2, ruby3.3 vulnerabilities

It was discovered that Ruby's Net::IMAP library did not properly verify that TLS encryption was started after issuing a STARTTLS command. A remote attacker could use this to perform a machine-in-the-middle attack and silently bypass TLS encryption. CVE-2026-42246 It was discovered that Ruby's...

PT-2026-37183

Name of the Vulnerable Software and Affected Versions Net::IMAP versions prior to 0.3.10 Net::IMAP versions prior to 0.4.24 Net::IMAP versions prior to 0.5.14 Net::IMAP versions prior to 0.6.4 Description A man-in-the-middle attacker can cause the starttls function to return successfully without...

CVE-2023-32290

The myMail app through 14.30 for iOS sends cleartext credentials in a situation where STARTTLS is expected by a server...

CVE-2022-28220

Apache James prior to release 3.6.3 and 3.7.1 is vulnerable to a buffering attack relying on the use of the STARTTLS command. Fix of CVE-2021-38542, which solved similar problem fron Apache James 3.6.1, is subject to a parser differential and do not take into account concurrent requests...

CVE-2021-25376

An improper synchronization logic in Samsung Email prior to version 6.1.41.0 can leak messages in certain mailbox in plain text when STARTTLS negotiation is failed...

CVE-2021-38542

Apache James prior to release 3.6.1 is vulnerable to a buffering attack relying on the use of the STARTTLS command. This can result in Man-in -the-middle command injection attacks, leading potentially to leakage of sensible information...

CVE-2021-33900

While investigating DIRSTUDIO-1219 it was noticed that configured StartTLS encryption was not applied when any SASL authentication mechanism DIGEST-MD5, GSSAPI was used. While investigating DIRSTUDIO-1220 it was noticed that any configured SASL confidentiality layer was not applied. This issue...

CVE-2021-37845

An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTLS command a violation of "The STARTTLS command is only valid in non-authenticated state." in RFC2595. This potentially allows an attacker...

CVE-2021-26911

core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode...

CVE-2021-38370

In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS...

CVE-2021-38372

In KDE Trojita 0.7, man-in-the-middle attackers can create new folders because untagged responses from an IMAP server are accepted before STARTTLS...

CVE-2021-38371

The STARTTLS feature in Exim through 4.94.2 allows response injection buffering during MTA SMTP sending...

CVE-2020-15955

In s/qmail through 4.0.07, an active MitM can inject arbitrary plaintext commands into a STARTTLS encrypted session between an SMTP client and s/qmail. This allows e-mail messages and user credentials to be sent to the MitM attacker...

CVE-2013-4584

Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STARTTLS IMAP and POP server. ssloutgoingciphers not being applied to STARTTLS connections...