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Alerts This Week
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Debian 11 DLA-3860-1 Critical: Dovecot Denial of Service Issues

debian lts
Calendar Grey September 2, 2024
Dist Debian Esm H88
Ubuntu Security Notice USN-9400-1 issued with Dovecot patch for critical Denial of Service flaws, notably CVE-2024-23184.
Vulnerabilities were discovered in dovecot, an POP3/IMAP server, which could lead to Denial of Service
Topics%20covered

Topics Covered

security advisory denial of service security update critical software patch debian dovecot

Summary

CVE-2024-23184

Having a large number of address headers (From, To, Cc, Bcc, etc.)
becomes excessively CPU intensive.

CVE-2024-23185

Very large headers can cause resource exhaustion when parsing
message.

For Debian 11 bullseye, these problems have been fixed in version
1:2.3.13+dfsg1-2+deb11u2.

We recommend that you upgrade your dovecot packages.

For the detailed security status of dovecot please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/dovecot

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: dovecot
Version: 1:2.3.13+dfsg1-2+deb11u2
CVE ID: CVE-2024-23184 CVE-2024-23185
Debian Bug: 1078876 1078877

Topics%20covered

Topics Covered

security advisory denial of service security update critical software patch debian dovecot

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