Alerts This Week
Warning Icon 1 923
Alerts This Week
Warning Icon 1 923

Gentoo: GLSA 202101-01 Normal: Dovecot DoS Risk and Information Exposure

gentoo
Calendar Grey January 10, 2021
Dist Gentoo Esm H88
Potential security issues in Dovecot as noted in Gentoo GLSA 202101-01 could lead to Denial of Service and data leakage. It is recommended to update your system promptly.
Multiple vulnerabilities have been found in Dovecot, the worst of which could allow remote attackers to cause a Denial of Service condition.

Summary

Multiple vulnerabilities have been discovered in Dovecot. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory denial of service gentoo remote attack information disclosure information exposure dovecot normal severity

Resolution

All Dovecot users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/dovecot-2.3.13"

References

[ 1 ] CVE-2020-24386 https://nvd.nist.gov/vuln/detail/CVE-2020-24386 [ 2 ] CVE-2020-25275 https://nvd.nist.gov/vuln/detail/CVE-2020-25275

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202101-01
style>.gentoo_availability{display:block;}

Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: Dovecot: Multiple vulnerabilities
Date: January 10, 2021
Bugs: #763525
ID: 202101-01

Topics%20covered

Topics Covered

security advisory denial of service gentoo remote attack information disclosure information exposure dovecot normal severity

Synopsis

Multiple vulnerabilities have been found in Dovecot, the worst of which could allow remote attackers to cause a Denial of Service condition.

Background

Dovecot is an open source IMAP and POP3 email server.

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/dovecot < 2.3.13 >= 2.3.13

Impact

===== A remote attacker could send a specially crafted mail or send a specially crafted IMAP command possibly resulting in a Denial of Service condition or an authenticated remote attacker might be able to discover the file system directory structure and access other users' emails.

Workaround

The information disclosure vulnerability can be mitigated by disabling IMAP hibernation feature which isn't enabled by default.

Your message here