An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed SMB2_SET_INFO_HE command.

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

  - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-     based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed     SMB2_SET_INFO_HE command. (CVE-2022-47942)

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

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-47942 advisory.

  - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-     based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed     SMB2_SET_INFO_HE command. (CVE-2022-47942)

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

The remote Ubuntu 20.04 LTS / 22.04 LTS host is running a ksmbd server that is affected by multiple vulnerabilities:

  - An unauthenticated remote code execution vulnerability in the ksmbd component of the Linux kernel.
    (CVE-2022-47939)

  - An authenticated remote code execution vulnerability in the ksmbd component of the Linux kernel.
    (CVE-2022-47942)

  - An unauthenticated remote denial of service vulnerability in the ksmbd component of the Linux     kernel. (CVE-2022-47941)

  - Authenticated denial of service vulnerabilities in the ksmbd component of the Linux kernel.
    (CVE-2022-47938, CVE-2022-47940)

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

ID	Name	Product	Family	Severity
245145	Linux Distros Unpatched Vulnerability : CVE-2022-47942	Nessus	Misc.	high
172786	CBL Mariner 2.0 Security Update: kernel (CVE-2022-47942)	Nessus	MarinerOS Local Security Checks	high
169894	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel kmsbd multiple vulnerabilities	Nessus	Ubuntu Local Security Checks	critical

Detections

Analytics

CVE-2022-47942

high

Tenable Plugins

high

high

critical