遠端 Azure Linux 3.0 主機上安裝的 gnutls 版本比測試版舊。因此，此版本會受到 CVE-2025-32988 公告中提及的一個弱點影響。

  - 在 GnuTLS 中發現一個缺陷。在 GnuTLS 中存在一個雙重釋放弱點這是因為在對包含 otherName 的主體別名 (SAN) 項目的匯出邏輯進行不正確的擁有權處理所導致。如果 type-id OID 無效或格式錯誤GnuTLS 會在非其擁有的 ASN.1 節點上呼叫 asn1_delete_structure()導致當父函式或呼叫者稍後嘗試釋放相同結構時導致重複釋放情形。僅可使用公開 GnuTLS API 和 觸發此弱點視配置器行為而定可能導致拒絕服務或記憶體損毀。 (CVE-2025-32988)

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

遠端主機受到 GLSA-202509-08 中所述的弱點影響 (GnuTLS多個弱點)

    在 GnuTLS 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。

Tenable 已直接從 Gentoo Linux 安全公告擷取前置描述區塊。

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。

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。

  - 在 GnuTLS 中發現一個缺陷。在 GnuTLS 中存在一個雙重釋放弱點這是因為在對包含 otherName 的主體別名 (SAN) 項目的匯出邏輯進行不正確的擁有權處理所導致。如果 type-id OID 無效或格式錯誤GnuTLS 會在非其擁有的 ASN.1 節點上呼叫 asn1_delete_structure()導致當父函式或呼叫者稍後嘗試釋放相同結構時導致重複釋放情形。僅可使用公開 GnuTLS API 觸發此弱點且視配置器行為而定可能導致拒絕服務或記憶體損毀。 (CVE-2025-32988)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-16a24364ce advisory.

    This updates gnutls to the latest upstream release. Notable changes are:

    * PKCS#11 cryptographic provider support
    * Support for kTLS rekeying with kernel 6.14+
    * Support for the almost standardized ML-DSA private key formats

    This also fixes 4 CVEs (CVE-2025-32989, CVE-2025-6395, CVE-2025-32988, and CVE-2025-32990).

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.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7635-1 advisory.

    It was discovered that GnuTLS incorrectly handled exporting Subject Alternative Name (SAN) entries     containing an otherName. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a     denial of service, or possibly execute arbitrary code. (CVE-2025-32988)

    It was discovered that GnuTLS incorrectly handled parsing the Certificate Transparency (CT) Signed     Certificate Timestamp (SCT) extension. A remote attacker could use this issue to cause GnuTLS to crash,     resulting in a denial of service, or possibly obtain sensitive information. (CVE-2025-32989)

    It was discovered that the GnuTLS certtool utility incorrectly handled parsing certain template files. An     attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly     execute arbitrary code. (CVE-2025-32990)

    Stefan Bhler discovered that GnuTLS incorrectly handled parsing certain template files. An attacker     could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. (CVE-2025-6395)

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.

An update of the gnutls package has been released.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02595-1 advisory.

    - CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
    - CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries     containing an otherName (bsc#1246232)
    - CVE-2025-32989: Fix heap buffer overread when handling the CT SCT extension during X.509 certificate     parsing (bsc#1246233)
    - CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

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

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

The version of gnutls installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-32988 advisory.

  - A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership     handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the     type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not     own, leading to a double-free condition when the parent function or caller later attempts to free the same     structure. This vulnerability can be triggered using only public GnuTLS APIs and May result in denial of     service or memory corruption, depending on allocator behavior. (CVE-2025-32988)

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-202509-08 (GnuTLS: Multiple Vulnerabilities)

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

Tenable has extracted the preceding description block directly from the Gentoo 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.

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

  - A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership     handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the     type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not     own, leading to a double-free condition when the parent function or caller later attempts to free the same     structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of     service or memory corruption, depending on allocator behavior. (CVE-2025-32988)

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

ID	名稱	產品	系列	已發布	已更新	嚴重性
242851	Azure Linux 3.0 安全性更新gnutls (CVE-2025-32988)	Nessus	Azure Linux Local Security Checks	2025/7/25	2025/9/15	high
265361	GLSA-202509-08 GnuTLS多個弱點	Nessus	Gentoo Local Security Checks	2025/9/18	2025/9/18	high
260504	Linux Distros 未修補的弱點：CVE-2025-32988	Nessus	Misc.	2025/9/2	2025/9/25	high
242043	Fedora 42 : gnutls (2025-16a24364ce)	Nessus	Fedora Local Security Checks	2025/7/13	2025/7/13	medium
242198	Ubuntu 22.04 LTS / 24.04 LTS / 25.04 : GnuTLS vulnerabilities (USN-7635-1)	Nessus	Ubuntu Local Security Checks	2025/7/16	2025/7/16	medium
242667	Photon OS 5.0: Gnutls PHSA-2025-5.0-0561	Nessus	PhotonOS Local Security Checks	2025/7/24	2025/7/24	medium
243296	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : gnutls (SUSE-SU-2025:02595-1)	Nessus	SuSE Local Security Checks	2025/8/2	2025/8/2	medium
242851	Azure Linux 3.0 Security Update: gnutls (CVE-2025-32988)	Nessus	Azure Linux Local Security Checks	2025/7/25	2025/9/15	high
265361	GLSA-202509-08 : GnuTLS: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	2025/9/18	2025/9/18	high
260504	Linux Distros Unpatched Vulnerability : CVE-2025-32988	Nessus	Misc.	2025/9/2	2025/9/25	high

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