遠端 Redhat Enterprise Linux 9 主機上安裝的套件受到 RHSA-2023: 2261 公告中提及的多個弱點影響。

  - 攻擊者可藉由讓利用此缺陷的查詢涌入目標解析器，來顯著降低解析器的效能，有效地拒絕合法用戶端存取 DNS 解析服務。
    (CVE-2022-2795)

  - 傳送大量動態 DNS 更新可能會造成「named」配置大量記憶體，這反過來可導致「named」因為缺少可用記憶體而結束。我們尚未發現任何利用此弱點的案例。程式在檢查存取權限 (ACL) 之前配置記憶體，並在處理來自存取憑證可接受的用戶端的動態更新期間予以保留。拒絕後，會立即釋放配置給不允許傳送更新之用戶端的記憶體。因此，此弱點的影響範圍僅限於可進行動態區域變更的受信任的用戶端。如果動態更新遭到拒絕，記憶體將很快被再次釋放。因此，只有透過傳送大量未接受的動態更新，並且數量與預定達到相同有害結果的查詢溢流相當，才有可能降低「named」的效能或將其停止。BIND 9.11 和更早版本的分支也會受到影響，但這時是透過耗盡內部資源而不是記憶體限制來利用此弱點。這可能會降低效能，但對於大多數伺服器而言應該不是重大問題。
    因此，我們不打算解決 BIND 9.16 之前的 BIND 版本中的這一問題。此問題會影響 BIND 9 9.16.0 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.8-S1 至 9.16.36-S1 版。(CVE-2022-3094)

  - 當啟用過時快取和過時答案、選項「stale-answer-client-timeout」設為正整數並且解析器收到 RRSIG 查詢時，BIND 9 解析器可能會損毀。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3736)

  - 此問題可影響具有「stale-answer-enable yes;」設定、也使用「stale-answer-client-timeout」選項並且設定為大於零的值的 BIND 9 解析器。如果解析器收到許多需要遞回的查詢，則等待遞回完成的用戶端數量也會相應增加。如果在收到新用戶端查詢時已經有足夠的用戶端在等待，以便使等待時間最長的用戶端  SERVFAIL (請參閱 BIND 9 ARM「recursive-clients」限制和軟配額)，則可能在向此舊版用戶端提供過時答案與傳送可能造成宣告失敗的提早逾時 SERVFAIL 之間發生爭用情形。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3924)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Ubuntu 20.04 LTS/22.04 LTS 主機上安裝的套件受到 USN-5827-1 公告中所提及的多個弱點影響。

  - 當啟用過時快取和過時答案、選項「stale-answer-client-timeout」設為正整數並且解析器收到 RRSIG 查詢時，BIND 9 解析器可能會損毀。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3736)

  - 傳送大量動態 DNS 更新可能會造成「named」配置大量記憶體，這反過來可導致「named」因為缺少可用記憶體而結束。我們尚未發現任何利用此弱點的案例。程式在檢查存取權限 (ACL) 之前配置記憶體，並在處理來自存取憑證可接受的用戶端的動態更新期間予以保留。拒絕後，會立即釋放配置給不允許傳送更新之用戶端的記憶體。因此，此弱點的影響範圍僅限於可進行動態區域變更的受信任的用戶端。如果動態更新遭到拒絕，記憶體將很快被再次釋放。因此，只有透過傳送大量未接受的動態更新，並且數量與預定達到相同有害結果的查詢溢流相當，才有可能降低「named」的效能或將其停止。BIND 9.11 和更早版本的分支也會受到影響，但這時是透過耗盡內部資源而不是記憶體限制來利用此弱點。這可能會降低效能，但對於大多數伺服器而言應該不是重大問題。
    因此，我們不打算解決 BIND 9.16 之前的 BIND 版本中的這一問題。此問題會影響 BIND 9 9.16.0 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.8-S1 至 9.16.36-S1 版。(CVE-2022-3094)

  - 此問題可影響具有「stale-answer-enable yes;」設定、也使用「stale-answer-client-timeout」選項並且設定為大於零的值的 BIND 9 解析器。如果解析器收到許多需要遞回的查詢，則等待遞回完成的用戶端數量也會相應增加。如果在收到新用戶端查詢時已經有足夠的用戶端在等待，以便使等待時間最長的用戶端  SERVFAIL (請參閱 BIND 9 ARM「recursive-clients」限制和軟配額)，則可能在向此舊版用戶端提供過時答案與傳送可能造成宣告失敗的提早逾時 SERVFAIL 之間發生爭用情形。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3924)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Debian 11 主機上安裝的多個套件受到 dsa-5329 公告中提及的多個弱點影響。

  - 傳送大量動態 DNS 更新可能會造成「named」配置大量記憶體，這反過來可導致「named」因為缺少可用記憶體而結束。我們尚未發現任何利用此弱點的案例。程式在檢查存取權限 (ACL) 之前配置記憶體，並在處理來自存取憑證可接受的用戶端的動態更新期間予以保留。拒絕後，會立即釋放配置給不允許傳送更新之用戶端的記憶體。因此，此弱點的影響範圍僅限於可進行動態區域變更的受信任的用戶端。如果動態更新遭到拒絕，記憶體將很快被再次釋放。因此，只有透過傳送大量未接受的動態更新，並且數量與預定達到相同有害結果的查詢溢流相當，才有可能降低「named」的效能或將其停止。BIND 9.11 和更早版本的分支也會受到影響，但這時是透過耗盡內部資源而不是記憶體限制來利用此弱點。這可能會降低效能，但對於大多數伺服器而言應該不是重大問題。
    因此，我們不打算解決 BIND 9.16 之前的 BIND 版本中的這一問題。此問題會影響 BIND 9 9.16.0 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.8-S1 至 9.16.36-S1 版。(CVE-2022-3094)

  - 當啟用過時快取和過時答案、選項「stale-answer-client-timeout」設為正整數並且解析器收到 RRSIG 查詢時，BIND 9 解析器可能會損毀。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3736)

  - 此問題可影響具有「stale-answer-enable yes;」設定、也使用「stale-answer-client-timeout」選項並且設定為大於零的值的 BIND 9 解析器。如果解析器收到許多需要遞回的查詢，則等待遞回完成的用戶端數量也會相應增加。如果在收到新用戶端查詢時已經有足夠的用戶端在等待，以便使等待時間最長的用戶端  SERVFAIL (請參閱 BIND 9 ARM「recursive-clients」限制和軟配額)，則可能在向此舊版用戶端提供過時答案與傳送可能造成宣告失敗的提早逾時 SERVFAIL 之間發生爭用情形。此問題會影響 BIND 9 9.16.12 至 9.16.36、9.18.0 至 9.18.10、9.19.0 至 9.19.8 以及 9.16.12-S1 至 9.16.36-S1 版。(CVE-2022-3924)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

The remote Fedora 37 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-95d98f89a8 advisory.

    - [Release notes](https://downloads.isc.org/isc/bind9/9.18.11/RELEASE-NOTES-bind-9.18.11.html)


Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-161 advisory.

    By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the     resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
    (CVE-2022-2795)

    A flaw was found in the Bind package, where the resolver can crash when stale cache and stale answers are     enabled, option stale-answer-client-timeout is set to 0 and there is a stale CNAME in the cache for an     incoming query. By sending specific queries to the resolver, an attacker can cause named to crash.
    (CVE-2022-3080)

    Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in     turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has     been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained     during the processing of a dynamic update from a client whose access credentials are accepted. Memory     allocated to clients that are not permitted to send updates is released immediately upon rejection. The     scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone     changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only     likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates     comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and     earlier branches are also affected, but through exhaustion of internal resources rather than memory     constraints. This may reduce performance but should not be a significant problem for most servers.
    Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9     versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through     9.16.36-S1. (CVE-2022-3094)

    Processing of repeated responses to the same query, where both responses contain ECS pseudo-options, but     where the first is broken in some way, can cause BIND to exit with an assertion failure. 'Broken' in this     context is anything that would cause the resolver to reject the query response, such as a mismatch between     query and answer name. This issue affects BIND 9 versions 9.11.4-S1 through 9.11.37-S1 and 9.16.8-S1     through 9.16.36-S1. (CVE-2022-3488)

    A flaw was found in Bind, where a resolver crash is possible. When stale cache and stale answers are     enabled, the option stale-answer-client-timeout is set to a positive integer, and the resolver receives an     RRSIG query. (CVE-2022-3736)

    By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38177)

    By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38178)

    This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option     `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many     queries that require recursion, there will be a corresponding increase in the number of clients that are     waiting for recursion to complete. If there are sufficient clients already waiting when a new client query     is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-     clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer     to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This     issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and     9.16.12-S1 through 9.16.36-S1. (CVE-2022-3924)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in     turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has     been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained     during the processing of a dynamic update from a client whose access credentials are accepted. Memory     allocated to clients that are not permitted to send updates is released immediately upon rejection. The     scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone     changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only     likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates     comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and     earlier branches are also affected, but through exhaustion of internal resources rather than memory     constraints. This may reduce performance but should not be a significant problem for most servers.
    Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9     versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through     9.16.36-S1. (CVE-2022-3094)

  - BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-     timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9     versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through     9.16.36-S1. (CVE-2022-3736)

  - This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option     `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many     queries that require recursion, there will be a corresponding increase in the number of clients that are     waiting for recursion to complete. If there are sufficient clients already waiting when a new client query     is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-     clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer     to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This     issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and     9.16.12-S1 through 9.16.36-S1. (CVE-2022-3924)

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

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:2261 advisory.

  - By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the     resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
    (CVE-2022-2795)

  - Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in     turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has     been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained     during the processing of a dynamic update from a client whose access credentials are accepted. Memory     allocated to clients that are not permitted to send updates is released immediately upon rejection. The     scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone     changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only     likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates     comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and     earlier branches are also affected, but through exhaustion of internal resources rather than memory     constraints. This may reduce performance but should not be a significant problem for most servers.
    Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9     versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through     9.16.36-S1. (CVE-2022-3094)

  - BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-     timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9     versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through     9.16.36-S1. (CVE-2022-3736)

  - This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option     `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many     queries that require recursion, there will be a corresponding increase in the number of clients that are     waiting for recursion to complete. If there are sufficient clients already waiting when a new client query     is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-     clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer     to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This     issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and     9.16.12-S1 through 9.16.36-S1. (CVE-2022-3924)

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-2792 advisory.

    - Handle subtle difference between upstream and rhel (CVE-2022-3094)
    - Prevent flooding with UPDATE requests (CVE-2022-3094)
    - Handle RRSIG queries when server-stale is active (CVE-2022-3736)
    - Fix crash when soft-quota is reached and serve-stale is active (CVE-2022-3924)
    - Bound the amount of work performed for delegations (CVE-2022-2795)
    - Fix possible serve-stale related crash (CVE-2022-3080)
    - Fix memory leak in ECDSA verify processing (CVE-2022-38177)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues 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
175448	RHEL 9：bind (RHSA-2023: 2261)	Nessus	Red Hat Local Security Checks	2023/5/12	2024/11/7	medium
170632	Ubuntu 20.04 LTS / 22.04 LTS：Bind 弱點 (USN-5827-1)	Nessus	Ubuntu Local Security Checks	2023/1/25	2025/9/3	high
170726	Debian DSA-5329-1：bind9 - 安全性更新	Nessus	Debian Local Security Checks	2023/1/27	2023/10/24	high
170868	Fedora 37 : bind / bind-dyndb-ldap (2023-95d98f89a8)	Nessus	Fedora Local Security Checks	2023/1/30	2024/11/14	high
174579	Amazon Linux 2023 : bind, bind-chroot, bind-devel (ALAS2023-2023-161)	Nessus	Amazon Linux Local Security Checks	2023/4/20	2024/12/11	medium
175245	EulerOS 2.0 SP11 : bind (EulerOS-SA-2023-1754)	Nessus	Huawei Local Security Checks	2023/5/8	2023/6/30	high
175253	EulerOS 2.0 SP11 : bind (EulerOS-SA-2023-1776)	Nessus	Huawei Local Security Checks	2023/5/8	2023/6/30	high
175612	AlmaLinux 9 : bind (ALSA-2023:2261)	Nessus	Alma Linux Local Security Checks	2023/5/14	2023/6/30	high
176273	Oracle Linux 8 : bind9.16 (ELSA-2023-2792)	Nessus	Oracle Linux Local Security Checks	2023/5/24	2024/11/2	medium

检测

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