USN-4361-1: Dovecot vulnerabilities

Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service. CVE-2020-10957, CVE-2020-10967 Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to...

USN-4361-1 dovecot vulnerabilities

Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service. CVE-2020-10957, CVE-2020-10967 Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to...

UBUNTU-CVE-2020-10958

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command...

CVE-2020-10957

In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp...

CVE-2020-10958

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command...

UBUNTU-CVE-2020-10967

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart...

CVE-2020-10967

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart...

UBUNTU-CVE-2020-10957

In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp...

PT-2020-12455 · Dovecot +7 · Dovecot +7

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.10.1 Description: The issue allows remote unauthenticated attackers to crash the lmtp or submission process by sending mail with an empty localpart. Recommendations: For versions prior to 2.3.10.1, update to...

PT-2020-12448 · Dovecot +6 · Dovecot +6

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.10.1 Description: The issue arises from sending malformed parameters to a NOOP command, which causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp. This can be triggered without...

Open-Xchange Dovecot 2.3.10 Null Pointer Dereference / Denial Of Service Vulnerabilities

------------------ Open-Xchange Security Advisory 2020-05-18 Product: Dovecot Vendor: OX Software GmbH Internal reference: DOV-3784 Vulnerability type: NULL pointer dereference CWE-476 Vulnerable version: 2.3.0 - 2.3.10 Vulnerable component: submission, lmtp Report confidence: Confirmed Solution...

PT-2020-12449 · Dovecot +7 · Dovecot +7

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.10.1 Description: A crafted SMTP/LMTP message can trigger an unauthenticated use-after-free bug in submission-login, submission, or lmtp, leading to a crash under circumstances involving many newlines after a...

Amazon Linux AMI : dovecot (ALAS-2020-1363)

The version of dovecot installed on the remote host is prior to 2.2.36-6.19. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1363 advisory. In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker...

Medium: dovecot

Issue Overview: In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components. CVE-2019-7524 It was discovered that...

Open-Xchange: Pre-auth Denial-of-Service in Dovecot RPA implementation

Hi, Dovecot security team. I am Orange from DEVCORE security team. We just did a little security audit on the authentication mechanism of Dovecot, and found a buffer over-read in RPA implementation. In the mech-rpa.c, the function rpareadbuffer doesn't check that the length could be zero, and pas...

Open-Xchange: Pre-auth buffer over-read in Dovecot NTLM implementation

Hi, Dovecot security team. I am Orange from DEVCORE security team. We just did a little security audit on the authentication mechanism of Dovecot, and found a buffer over-read in NTLM implementation. The structure of NTLM field is defined in ntlm-types.h c struct ntlmsspbuffer uint16t length; /...

Open-Xchange: reading the stack data of the imap process

in dovecot / core in the imap-client-hibernate.c file in the imaphibernatehandshake function, lines 31..39 contain vulnerable code: cpp else if ret = readfd, buf, sizeofbuf-1 0 && bufret-1 == '\n' bufret-1 = '\0'; if versionstringverifybuf, "imap-hibernate", 1 return 0; ierror"%s sent invalid...

mail/dovecot -- multiple vulnerabilities

Aki Tuomi reports: Parsing mails with a large number of MIME parts could have resulted in excessive CPU usage or a crash due to running out of stack memory.. Dovecot's NTLM implementation does not correctly check message buffer size, which leads to reading past allocation which can lead to crash...

Scientific Linux Security Update : dovecot on SL7.x x86_64 (20200407)

dovecot: Improper certificate validation dovecot: Buffer overflow in indexer-worker process results in privilege escalation C Tenable Network Security, Inc. The descriptive text is C Scientific Linux. include'compat.inc'; if description scriptid135805; scriptversion"1.3";...

Denial Of Service (DoS)

dovecot is vulnerable to denial of service. A denial of service flaw was found in the way Dovecot handled NULL characters in certain header names. A mail message with specially-crafted headers could cause the Dovecot child process handling the target user's connection to crash, blocking them from...