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

  - smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger
    a "very significant" memory leak via messages to an instance that performs many regex lookups.
    (CVE-2020-35679)

  - smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to
    cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client
    activity, because the filter state machine does not properly maintain the I/O channel between the SMTP
    engine and the filters layer. (CVE-2020-35680)

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 在某些配置中低于 6.8.0p1 的 OpenSMTPD 的 smtpd/lka_filter.c 允许远程攻击者通过构建的客户端活动模式造成拒绝服务空指针取消引用和后台程序崩溃因为筛选器状态机不会正确处理维护 SMTP 引擎与过滤器层之间的 I/O 通道。 (CVE-2020-35680)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且廠商未提供可用的修補程式。

  - smtpd/lka_filter.c 在 6.8.0p1 版之前的 OpenSMTPD 中特定組態允許遠端攻擊者透過特製的用戶端活動模式造成拒絕服務 (NULL 指標解除參照和程序損毀)這是因為篩選狀態機器未正確處理維護 SMTP 引擎和篩選層之間的 I/O 通道。 (CVE-2020-35680)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

遠端主機受到 GLSA-202105-12 中所述的弱點影響 (OpenSMTPD：多個弱點)

    在 OpenSMTPD 中發現多個弱點。如需詳細資訊，請檢閱下方提及的 CVE 識別碼。
  影響：

    遠端攻擊者可連線至 SMTP 接聽程式精靈，進而可能造成拒絕服務情形。
  因應措施：

    目前尚無已知的因應措施。

远程主机受到 GLSA-202105-12 中所述的漏洞影响（OpenSMTPD：多个漏洞）

    在 OpenSMTPD 中发现多种漏洞。请检查下方引用的 CVE 标识符以了解详细信息。
  影响：

    远程攻击者通过连接到 SMTP 监听后台程序，可能造成出现拒绝服务的情况。
  变通方案：

    目前无任何已知的变通方案。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - 6.8.0p1 より前の OpenSMTPD における smtpd/lka_filter.c により、特定の構成において、リモートの攻撃者が、フィルター状態マシンが適切には SMTP エンジンとフィルターレイヤー間の I/O チャネルを維持します。CVE-2020-35680

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

**opensmtpd 6.8.0p2**

新機能：

  - 匿名のコミュニティメンバーによる、OpenSSLのECDSA privsepエンジンのサポート

バグ修正：

  - リゾルバーメモリ漏洩および正規表現テーブルメモリ漏洩を修正しました

  - デーモンのクラッシュの可能性につながる、フィルター状態マシンのバグを修正しました

  - 一部のシステムで切り捨てられたプロセス名を出力するロギングフォーマットを修正しました

  - macOSのビルドを修正しました

  - さまざまなmanページの改善

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。

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to     cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client     activity, because the filter state machine does not properly maintain the I/O channel between the SMTP     engine and the filters layer. (CVE-2020-35680)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 32 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-71fbdecdf8 advisory.

  - smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger     a very significant memory leak via messages to an instance that performs many regex lookups.
    (CVE-2020-35679)

  - smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to     cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client     activity, because the filter state machine does not properly maintain the I/O channel between the SMTP     engine and the filters layer. (CVE-2020-35680)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202105-12 (OpenSMTPD: Multiple vulnerabilities)

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

    A remote attacker, by connecting to the SMTP listener daemon, could       possibly cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

The remote Fedora 33 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-848fd34b0b advisory.

  - smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger     a very significant memory leak via messages to an instance that performs many regex lookups.
    (CVE-2020-35679)

  - smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to     cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client     activity, because the filter state machine does not properly maintain the I/O channel between the SMTP     engine and the filters layer. (CVE-2020-35680)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
406036	Alpine: multiple opensmtpd packages: security update to 6.7.1p1-r1	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
406034	Alpine: multiple opensmtpd packages: security update to 6.6.4p1-r1	Tenable Cloud Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
406034	Alpine: multiple opensmtpd packages: security update to 6.6.4p1-r1	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
406036	Alpine: multiple opensmtpd packages: security update to 6.7.1p1-r1	Tenable Cloud Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
406035	Alpine: multiple opensmtpd packages: security update to 6.6.4p1-r2	Tenable Cloud Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
406035	Alpine: multiple opensmtpd packages: security update to 6.6.4p1-r2	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	high
255573	Linux Distros 未修补的漏洞：CVE-2020-35680	Nessus	Misc.	2025/8/26	2026/7/12	high
255573	Linux Distros 未修補的弱點：CVE-2020-35680	Nessus	Misc.	2025/8/26	2026/7/12	high
150009	GLSA-202105-12：OpenSMTPD：多個弱點	Nessus	Gentoo Local Security Checks	2021/5/27	2022/4/28	high
150009	GLSA-202105-12 : OpenSMTPD：多个漏洞	Nessus	Gentoo Local Security Checks	2021/5/27	2022/4/28	high
255573	Linux Distros のパッチ未適用の脆弱性: CVE-2020-35680	Nessus	Misc.	2025/8/26	2026/7/12	high
145780	Fedora 32：opensmtpd（2021-71fbdecdf8）	Nessus	Fedora Local Security Checks	2021/2/1	2022/4/27	high
145747	Fedora 33：opensmtpd（2021-848fd34b0b）	Nessus	Fedora Local Security Checks	2021/2/1	2022/4/27	high
255573	Linux Distros Unpatched Vulnerability : CVE-2020-35680	Nessus	Misc.	2025/8/26	2026/7/12	high
145780	Fedora 32 : opensmtpd (2021-71fbdecdf8)	Nessus	Fedora Local Security Checks	2021/2/1	2022/4/27	high
150009	GLSA-202105-12 : OpenSMTPD: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2021/5/27	2022/4/28	high
145747	Fedora 33 : opensmtpd (2021-848fd34b0b)	Nessus	Fedora Local Security Checks	2021/2/1	2022/4/27	high

检测

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