Detections
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SCA: security update for b2 (GHSA-8wr4-2wm6-w3pr)

medium Tenable Cloud Security Plugin ID 412911

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - B2 Command Line Tool is the official command line tool for the backblaze cloud storage service. Linux and
 Mac releases of the B2 command-line tool version 3.2.0 and below contain a key disclosure vulnerability
 that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use
 (TOCTOU) race condition. The command line tool saves API keys (and bucket name-to-id mapping) in a local
 database file (`$XDG_CONFIG_HOME/b2/account_info`, `~/.b2_account_info` or a user-defined path) when `b2
 authorize-account` is first run. This happens regardless of whether a valid key is provided or not. When
 first created, the file is world readable and is (typically a few milliseconds) later altered to be
 private to the user. If the directory is readable by a local attacker and the user did not yet run `b2
 authorize-account` then during the brief period between file creation and permission modification, a local
 attacker can race to open the file and maintain a handle to it. This allows the local attacker to read the
 contents after the file after the sensitive information has been saved to it. Users that have not yet run
 `b2 authorize-account` should upgrade to B2 Command-Line Tool v3.2.1 before running it. Users that have
 run `b2 authorize-account` are safe if at the time of the file creation no other local users had read
 access to the local configuration file. Users that have run `b2 authorize-account` where the designated
 path could be opened by another local user should upgrade to B2 Command-Line Tool v3.2.1 and remove the
 database and regenerate all application keys. Note that `b2 clear-account` does not remove the database
 file and it should not be used to ensure that all open handles to the file are invalidated. If B2 Command-
 Line Tool cannot be upgraded to v3.2.1 due to a dependency conflict, a binary release can be used instead.
 Alternatively a new version could be installed within a virtualenv, or the permissions can be changed to
 prevent local users from opening the database file. (CVE-2022-23653)

See Also

https://github.com/advisories/GHSA-8wr4-2wm6-w3pr

Plugin Details

Severity: Medium

ID: 412911

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

CVSS Score Source: CVE-2022-23653

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.7

Threat Score: 1.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 2/24/2022

Vulnerability Publication Date: 2/23/2022

Reference Information

CVE: CVE-2022-23653

cwe: CWE-367