------------------------------------------------------------------------- Debian LTS Advisory DLA-2328-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ August 15, 2020 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : dovecot Version : 1:2.2.27-3+deb9u6 CVE ID : CVE-2020-12100 CVE-2020-12673 CVE-2020-12674 Debian Bug : 968302 Several vulnerabilities have been discovered in the Dovecot email server. CVE-2020-12100 Receiving mail with deeply nested MIME parts leads to resource exhaustion as Dovecot attempts to parse it. CVE-2020-12673 Dovecot's NTLM implementation does not correctly check message buffer size, which leads to a crash when reading past allocation. CVE-2020-12674 Dovecot's RPA mechanism implementation accepts zero-length message, which leads to assert-crash later on. For Debian 9 stretch, these problems have been fixed in version 1:2.2.27-3+deb9u6. 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/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
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