There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in
    command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.
    (CVE-2020-7046)

  - The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many
    characters must be read to compute the snippet and a trailing > character exists. This causes a denial of
    service in which the recipient cannot read all of their messages. (CVE-2020-7957)

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in
    command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.
    (CVE-2020-7046)

  - The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many
    characters must be read to compute the snippet and a trailing > character exists. This causes a denial of
    service in which the recipient cannot read all of their messages. (CVE-2020-7957)

  - 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-2020-10957)

  - 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-2020-10958)

  - 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)

- 2.3.9.3に更新済みのdovecot

  - CVE-2020-7046を修正します：切り捨てられたUTF-8が、DoS送信ログインとlmtpプロセスに利用される可能性があります。

  - CVE-2020-7957を修正します：特別に細工されたメールにより、スニペット生成がクラッシュする可能性があります。

注意：Tenable Network Securityは、前述の記述ブロックをFedora更新システムのWebサイトから直接抽出しています。
Tenableでは、新たな問題を持ち込まずに、できる限り自動的に整理して書式設定するようにしています。

- dovecot updated to 2.3.9.3

  - fixes CVE-2020-7046: Truncated UTF-8 can be used to DoS     submission-login and lmtp processes.

  - fixes CVE-2020-7957: Specially crafted mail can crash     snippet generation.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
423842	Alpine: multiple dovecot packages: security update to 2.3.9.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	2025/4/4	2026/7/2	high
423842	Alpine: multiple dovecot packages: security update to 2.3.9.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2025/4/4	2026/7/2	high
423863	Alpine: multiple dovecot packages: security update to 2.3.10.1-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	2025/4/4	2026/7/2	high
423863	Alpine: multiple dovecot packages: security update to 2.3.10.1-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2025/4/4	2026/7/2	high
133818	Fedora 31：1: dovecot（2020-10a58fda28）	Nessus	Fedora Local Security Checks	2020/2/20	2024/3/27	high
133817	Fedora 30：1: dovecot（2020-0e6a67af5a）	Nessus	Fedora Local Security Checks	2020/2/20	2024/3/27	high
133818	Fedora 31 : 1:dovecot (2020-10a58fda28)	Nessus	Fedora Local Security Checks	2020/2/20	2024/3/27	high
133817	Fedora 30 : 1:dovecot (2020-0e6a67af5a)	Nessus	Fedora Local Security Checks	2020/2/20	2024/3/27	high

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