The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - ldns: Memory corruption in ldns_rr_new_frm_fp_l (CVE-2017-1000231)

  - The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which     might allow local users to obtain the private key by reading the file. (CVE-2014-3209)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - ldns: Memory corruption in ldns_rr_new_frm_fp_l (CVE-2017-1000231)

  - The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which     might allow local users to obtain the private key by reading the file. (CVE-2014-3209)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Updated ldns packages fix security vulnerability :

ldns-keygen creates a private key with the default permissions according to the users umask, which in most cases will cause the private key to be world-readable (CVE-2014-3209).

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3491-1 advisory.

    Leon Weber discovered that the ldns-keygen tool incorrectly set permissions on private keys. A local     attacker could possibly use this issue to obtain generated private keys. This issue only applied to Ubuntu     14.04 LTS. (CVE-2014-3209)

    Stephan Zeisberg discovered that ldns incorrectly handled memory when processing data. A remote attacker     could use this issue to cause ldns to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2017-1000231, CVE-2017-1000232)

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

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

更新済みの ldns パッケージは、次のセキュリティの脆弱性を修正します：

ldns-keygen は、ユーザーの umask にしたがってデフォルトの権限で秘密鍵を作成します。大抵の場合、秘密鍵は誰でも読み取れるようになります（CVE-2014-3209）。

Leon Weber氏は、ldns-keygenツールが秘密鍵のアクセス許可を不適切に設定することを発見しました。ローカルの攻撃者がこの問題を悪用して、生成された秘密鍵を取得する可能性があります。この問題の影響を受けるのはUbuntu 14.04 LTSのみです。(CVE-2014-3209) 

Stephan Zeisberg氏は、データを処理するとき、ldnsがメモリを不適切に処理することを発見しました。リモートの攻撃者がこの問題を悪用して NSS をクラッシュさせ、サービス拒否または任意のコードの実行を引き起こす可能性があります。(CVE-2017-1000231、CVE-2017-1000232)。

注意: Tenable Network Security は、前述の説明ブロックを Ubuntu セキュリティアドバイザリからすでに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。

更新后的 ldns 程序包修复了安全漏洞：

ldns-keygen 根据用户 umask 以默认权限创建私钥，这在大多数情况下将导致私钥全局可读 (CVE-2014-3209)。

Leon Weber 发现 ldns-keygen 工具未能正确设置私钥的权限。本地攻击者可能利用此问题获取生成的私钥。此问题仅影响 Ubuntu 14.04 LTS。(CVE-2014-3209)

Stephan Zeisberg 发现 ldns 在处理数据时未能正确处理内存。远程攻击者可以利用此问题导致 ldns 崩溃，从而导致拒绝服务或执行任意代码。（CVE-2017-1000231、CVE-2017-1000232）

请注意，Tenable Network Security 已直接从 Ubuntu 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下，尽可能进行自动清理和排版。

更新版 ldns 套件可修正安全性弱點：

ldns-keygen 會根據使用者 umask，以預設權限建立私密金鑰，這在大多數情況下會造成私密金鑰變得任何人皆可讀取 (CVE-2014-3209)。

Leon Weber 發現 ldns-keygen 工具未正確設定私密金鑰上的權限。本機攻擊者可能會利用此問題取得所產生的私密金鑰。此問題僅適用於 Ubuntu 14.04 LTS。(CVE-2014-3209)

Stephan Zeisberg 發現 ldns 在處理資料時，未正確處理記憶體。遠端攻擊者可利用此問題造成 ldns 損毀，進而引發拒絕服務或可能執行任意程式碼。(CVE-2017-1000231、CVE-2017-1000232)

請注意，Tenable Network Security 已直接從 Ubuntu 安全性公告擷取前述描述區塊。Tenable 已盡量在不造成其他問題的前提下，嘗試自動清理並將其格式化。

ID	Name	Product	Family	Published	Updated	Severity
199558	RHEL 6 : ldns (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/3/2024	critical
199642	RHEL 7 : ldns (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/3/2024	critical
73977	Mandriva Linux Security Advisory : ldns (MDVSA-2014:085)	Nessus	Mandriva Local Security Checks	5/13/2014	1/6/2021	low
104784	Ubuntu 14.04 LTS / 16.04 LTS : ldns vulnerabilities (USN-3491-1)	Nessus	Ubuntu Local Security Checks	11/27/2017	8/27/2024	critical
73977	Mandriva Linux セキュリティアドバイザリ：ldns（MDVSA-2014:085）	Nessus	Mandriva Local Security Checks	5/13/2014	1/6/2021	low
104784	Ubuntu 14.04 LTS / 16.04 LTS : ldns 脆弱性 (USN-3491-1)	Nessus	Ubuntu Local Security Checks	11/27/2017	8/27/2024	critical
73977	Mandriva Linux 安全公告：ldns (MDVSA-2014:085)	Nessus	Mandriva Local Security Checks	5/13/2014	1/6/2021	low
104784	Ubuntu 14.04 LTS / 16.04 LTS：ldns 漏洞 (USN-3491-1)	Nessus	Ubuntu Local Security Checks	11/27/2017	8/27/2024	critical
73977	Mandriva Linux 安全性公告：ldns (MDVSA-2014:085)	Nessus	Mandriva Local Security Checks	5/13/2014	1/6/2021	low
104784	Ubuntu 14.04 LTS / 16.04 LTS：ldns 弱點 (USN-3491-1)	Nessus	Ubuntu Local Security Checks	11/27/2017	8/27/2024	critical

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