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AlmaLinux 9 : swtpm (ALSA-2022:8100)

medium Nessus Plugin ID 167955

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2022:8100 advisory.

 - swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds. (CVE-2022-23645)

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

Solution

Update the affected swtpm, swtpm-libs and / or swtpm-tools packages.

See Also

https://errata.almalinux.org/9/ALSA-2022-8100.html

Plugin Details

Severity: Medium

ID: 167955

File Name: alma_linux_ALSA-2022-8100.nasl

Version: 1.2

Type: local

Published: 11/19/2022

Updated: 11/19/2022

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-23645

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:alma:linux:9::appstream, p-cpe:/a:alma:linux:swtpm-tools, cpe:/o:alma:linux:9, p-cpe:/a:alma:linux:swtpm, p-cpe:/a:alma:linux:swtpm-libs

Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/15/2022

Vulnerability Publication Date: 2/18/2022

Reference Information

CVE: CVE-2022-23645

CWE: 125