Astra Linux - уязвимость в thunderbird

Thunderbird ignored the configuration that required STARTTLS security for SMTP connections. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication...

CVE-2026-41132

CKAN is an open-source DMS data management system for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate e.g. self-signed, leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in...

dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw

A flaw was found in the .NET runtime System.Net.Mail in how email address data is parsed. Improper neutralization of special characters, specifically carriage return and line feed CR/LF sequences, may allow specially crafted email address input to be interpreted incorrectly. An attacker could...

EUVD-2026-19961

Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of potential consequenc...

CVE-2019-25652 UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM

UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept...

EUVD-2000-0578

Malware in sbrugna...

EUVD-2020-7175

Malware in sbrugna...

EUVD-2019-15040

Malware in sbrugna...

EUVD-2021-24954

Malware in sbrugna...

SUSE CVE-2009-4565

sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name CN field of an X.509 certificate, which 1 allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and 2 allows...

CVE-2022-24838 Command Injection in Appointment Emails for Nextcloud Calendar

Nextcloud Calendar is a calendar application for the nextcloud framework. SMTP Command Injection in Appointment Emails via Newlines: as newlines and special characters are not sanitized in the email value in the JSON request, a malicious attacker can inject newlines to break out of the RCPT TO:...

Security Vulnerabilities fixed in Thunderbird 91.2 — Mozilla

Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication...

How Does MTA-STS Improve Your Email Security?

Simple Mail Transfer Protocol or SMTP has easily exploitable security loopholes. Email routing protocols were designed in a time when cryptographic technology was at a nascent stage e.g., the de-facto protocol for email transfer, SMTP, is nearly 40 years old now, and therefore security was not an...

Email Bug Allows Message Snooping, Credential Theft

Researchers warn hackers can snoop on email messages by exploiting a bug in the underlying technology used by the majority of email servers that run the Internet Message Access Protocol, commonly referred to as IMAP. The bug, first reported in August 2020 and patched Monday, is tied to the email...

IBM i Resource Management Error Vulnerability

IBM i is a set of operating systems from IBM in the United States that run on IBM Power Systems and IBM PureSystems. A security vulnerability exists in IBM i SMTP, which can be exploited by an attacker to consume network bandwidth and disk space that may not be necessary and send spam...

Enhancing Email Security with MTA-STS and SMTP TLS Reporting

In 1982, when SMTP was first specified, it did not contain any mechanism for providing security at the transport level to secure communications between mail transfer agents. Later, in 1999, the STARTTLS command was added to SMTP that in turn supported the encryption of emails in between the...

EUVD-2020-7089

Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data e.g., from a man-in-the-middle attacker and evaluates it in a TLS context, aka "response injection."...

python: smtplib StartTLS stripping attack

It was found that Python's smtplib library did not return an exception when StartTLS failed to be established in the SMTP.starttls function. A man in the middle attacker could strip out the STARTTLS command without generating an exception on the Python SMTP client application, preventing the...

python: smtplib StartTLS stripping attack

It was found that Python's smtplib library did not return an exception when StartTLS failed to be established in the SMTP.starttls function. A man in the middle attacker could strip out the STARTTLS command without generating an exception on the Python SMTP client application, preventing the...

Check Point Software Firewall-1 4.0/1.4.1 Resource Exhaustion Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/1416/info The Check Point Firewall-1 SMTP Security Server in Firewall-1 4.0 and 4.1 on Windows NT is vulnerable to a simple network-based attack which can increase the firewall's CPU utilization to 100%. Sending a stream ...