A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

An update of the gnutls package has been released.

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by a vulnerability that has been acknowledged by the vendor but will not be patched.

  - GnuTLS: Null pointer dereference in MD_UPDATE (CVE-2021-4209)

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

This plugin has been deprecated as it does not adhere to established standards for this style of check.

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

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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.

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

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

  - A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during     verification of pkcs7 signatures in gnutls_pkcs7_verify function. (CVE-2022-2509)

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.

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

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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 Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5750-1 advisory.

    It was discovered that GnuTLS incorrectly handled certain memory operations. A remote attacker could     possibly use this issue to cause GnuTLS to crash, resulting in a denial of service.

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

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

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

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

  - A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during     verification of pkcs7 signatures in gnutls_pkcs7_verify function. (CVE-2022-2509)

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 SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:2830-1 advisory.

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

  - A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during     verification of pkcs7 signatures in gnutls_pkcs7_verify function. (CVE-2022-2509)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3070 advisory.

  - A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during     verification of pkcs7 signatures in gnutls_pkcs7_verify function. (CVE-2022-2509)

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5550-1 advisory.

    It was discovered that GnuTLS incorrectly handled certain memory operations. A remote attacker could     possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. This issue only     affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-4209)

    It was discovered that GnuTLS incorrectly handled the verification of certain pkcs7 signatures. A remote     attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly     execute arbitrary code. (CVE-2022-2509)

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.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2022:0717-1 advisory.

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:0717-1 advisory.

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:0678-1 advisory.

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:0677-1 advisory.

  - A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call     memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service     after authentication in rare circumstances. (CVE-2021-4209)

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

ID	Name	Product	Family	Severity
203875	Photon OS 3.0: Gnutls PHSA-2022-3.0-0445	Nessus	PhotonOS Local Security Checks	high
203191	Photon OS 4.0: Gnutls PHSA-2022-4.0-0240	Nessus	PhotonOS Local Security Checks	medium
198328	RHEL 8 : gnutls (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	medium
196534	RHEL 7 : gnutls (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
196513	RHEL 6 : gnutls (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
178887	EulerOS Virtualization 3.0.6.6 : gnutls (EulerOS-SA-2023-2411)	Nessus	Huawei Local Security Checks	medium
177174	EulerOS Virtualization 3.0.6.0 : gnutls (EulerOS-SA-2023-2221)	Nessus	Huawei Local Security Checks	high
175184	EulerOS Virtualization 3.0.2.0 : gnutls (EulerOS-SA-2023-1700)	Nessus	Huawei Local Security Checks	medium
172280	EulerOS 2.0 SP5 : gnutls (EulerOS-SA-2023-1504)	Nessus	Huawei Local Security Checks	medium
171137	EulerOS 2.0 SP8 : gnutls (EulerOS-SA-2023-1316)	Nessus	Huawei Local Security Checks	medium
169797	EulerOS Virtualization 2.9.0 : gnutls (EulerOS-SA-2023-1222)	Nessus	Huawei Local Security Checks	high
169790	EulerOS Virtualization 2.9.1 : gnutls (EulerOS-SA-2023-1192)	Nessus	Huawei Local Security Checks	high
169384	EulerOS Virtualization 2.10.0 : gnutls (EulerOS-SA-2022-2904)	Nessus	Huawei Local Security Checks	high
169381	EulerOS Virtualization 2.10.1 : gnutls (EulerOS-SA-2022-2930)	Nessus	Huawei Local Security Checks	high
168312	Ubuntu 16.04 ESM : GnuTLS vulnerability (USN-5750-1)	Nessus	Ubuntu Local Security Checks	medium
167422	EulerOS 2.0 SP9 : gnutls (EulerOS-SA-2022-2730)	Nessus	Huawei Local Security Checks	high
167387	EulerOS 2.0 SP9 : gnutls (EulerOS-SA-2022-2765)	Nessus	Huawei Local Security Checks	high
166862	EulerOS 2.0 SP10 : gnutls (EulerOS-SA-2022-2650)	Nessus	Huawei Local Security Checks	high
166828	EulerOS 2.0 SP10 : gnutls (EulerOS-SA-2022-2682)	Nessus	Huawei Local Security Checks	high
164265	SUSE SLES15 Security Update : gnutls (SUSE-SU-2022:2830-1)	Nessus	SuSE Local Security Checks	high
164081	Debian DLA-3070-1 : gnutls28 - LTS security update	Nessus	Debian Local Security Checks	high
163872	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : GnuTLS vulnerabilities (USN-5550-1)	Nessus	Ubuntu Local Security Checks	high
158637	openSUSE 15 Security Update : gnutls (openSUSE-SU-2022:0717-1)	Nessus	SuSE Local Security Checks	medium
158615	SUSE SLED15 / SLES15 Security Update : gnutls (SUSE-SU-2022:0717-1)	Nessus	SuSE Local Security Checks	medium
158580	SUSE SLES12 Security Update : gnutls (SUSE-SU-2022:0678-1)	Nessus	SuSE Local Security Checks	medium
158571	SUSE SLES12 Security Update : gnutls (SUSE-SU-2022:0677-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2021-4209

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Tenable Plugins

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