UBUNTU-CVE-2020-28200

The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension...

PT-2021-3384 · Dovecot +3 · Dovecot +3

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.15 Description: The issue is related to errors in resource management in the Dovecot mail server, which can be exploited by a remote attacker to cause a denial of service. The Sieve engine in Dovecot is affected,...

Open-Xchange: Null pointer dereference in lib-sieve after calling sieve_binary_block_index

There are some places that program calls function sievebinaryblockindex without checking the return valuemainly in sieve-binary-dumper.c. Such as: pigeonhole/src/lib-sieve/sieve-binary-dumper.c: bool sievebinarydumperrunstruct sievebinarydumper dumper, struct ostream stream, bool verbose struct...

NewStart CGSL MAIN 6.02 : cyrus-imapd Multiple Vulnerabilities (NS-SA-2021-0086)

The remote NewStart CGSL host, running version MAIN 6.02, has cyrus-imapd packages installed that are affected by multiple vulnerabilities: - Cyrus IMAP 2.5.x before 2.5.14 and 3.x before 3.0.12 allows privilege escalation because an HTTP request may be interpreted in the authentication context o...

Oracle Linux 8 : cyrus-imapd (ELSA-2020-4655)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4655 advisory. - Add fix for CVE-2019-19783 Tenable has extracted the preceding description block directly from the Oracle Linux security advisory. Note that Nessus h...

cyrus-imapd: lmtpd component created mailboxes with administrator privileges if the "fileinto" was used, bypassing ACL checks

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed 3.x or certain non-default sieve options are enabled 2.x, a user with a mail account on the service can use a sieve script containing a fileinto directive to...

RHEL 8 : cyrus-imapd (RHSA-2020:4655)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4655 advisory. The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and SIEVE support. Security Fixes: cyrus-imapd:...

Moderate: cyrus-imapd security update

The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and SIEVE support. Security Fixes: cyrus-imapd: privilege escalation in HTTP request CVE-2019-18928 cyrus-imapd: lmtpd component created mailboxes with administrator privileges if the "fileinto" was used,...

Open-Xchange: A malicious user can upload a malicious script through managesieve and trigger its execution in order to consume almost 100% of CPU (LMTP).

Summary A malicious user can create a malicious sieve script attached as "test.sieve", upload it to the server through managesieve and set as active. Then the user can send several specially crafted messages to himself to trigger long script execution. The attacker has to send one message per...

dovecot-pigeonhole -- Sieve excessive resource usage

Dovecot team reports reports: Sieve interpreter is not protected against abusive scripts that claim excessive resource usage. Fixed by limiting the user CPU time per single script execution and cumulatively over several script runs within a configurable timeout period. Sufficiently large CPU time...

Open-Xchange: A specifically designed sieve script can cause a DoS in lib-sieve during sieve script compilation via NULL pointer dereference

Reproduction realcrash.sieve is the attached script 1. Build dovecot and pigeonhole 2. Run sievec realcrash.sieve Requirements include and variables extensions should be required. One of the global commands global/export/import without any arguments should be followed by the same command with val...

Cyrus IMAP Server: Access restriction bypass

Background The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail server. Description An issue was discovered in Cyrus IMAP Server where sieve script uploading is excessively trusted. Impact A user can use a sieve script to create any mailbox with administrator privileges. Workaround...

Open-Xchange: Null dereference in mcht_relational_validate ext-relational-common.c:136

To reproduce, run test suite on following input : require "vnd.dovecot.testsuite"; require "relational"; require "comparator-i;ascii-numeric"; require "body"; / / testset "message" text: From: Whomever To: Someone Date: Sat, 10 Oct 2009 00:30:04 +0200 Subject: whatever . ; / RFC5173, Section 5.2:...

Open-Xchange: Null pointer deference in call to `mail_get_flags`

run test suite on following input require "vnd.dovecot.testsuite"; require "fileinto"; require "imap4flags"; require "mailbox"; testset "message" text: Subject: Test message. Test message. . ; test "Flag changes between stores" fileinto :create "FolderA"; if not testresultexecute testfail "failed...

Arbitrary Code Execution

cyrus-imapd is vulnerable to arbitrary code execution. The vulnerability exists as an authenticated user able to create Sieve mail filtering rules could use these flaws to execute arbitrary code with the privileges of the Cyrus IMAP server user...

Arbitrary Code Execution

cyrus-imapd is vulnerable to arbitrary code execution. The vulnerability exists as an authenticated user able to create Sieve mail filtering rules could use these flaws to execute arbitrary code with the privileges of the Cyrus IMAP server user...

RSA-250 Factored

RSA-250 has been factored. This computation was performed with the Number Field Sieve algorithm, using the open-source CADO-NFS software. The total computation time was roughly 2700 core-years, using Intel Xeon Gold 6130 CPUs as a reference 2.1GHz: RSA-250 sieving: 2450 physical core-years RSA-25...

CVE-2019-19783

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed 3.x or certain non-default sieve options are enabled 2.x, a user with a mail account on the service can use a sieve script containing a fileinto directive to...

CVE-2019-19783

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed 3.x or certain non-default sieve options are enabled 2.x, a user with a mail account on the service can use a sieve script containing a fileinto directive to...

DEBIAN-CVE-2019-19783

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed 3.x or certain non-default sieve options are enabled 2.x, a user with a mail account on the service can use a sieve script containing a fileinto directive to...