Lookup for vulnerable packages by Package URL.
| Purl | pkg:pypi/b2@2.5.1 |
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| Type | pypi |
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| Namespace | |
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| Name | b2 |
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| Version | 2.5.1 |
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| Qualifiers |
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| Subpath | |
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| Is_vulnerable | true |
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| Next_non_vulnerable_version | 3.2.1 |
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| Latest_non_vulnerable_version | 3.2.1 |
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| Affected_by_vulnerabilities |
| 0 |
| url |
VCID-qyby-143d-b7gz |
| vulnerability_id |
VCID-qyby-143d-b7gz |
| summary |
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. |
| references |
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| fixed_packages |
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| aliases |
CVE-2022-23653, GHSA-8wr4-2wm6-w3pr, PYSEC-2022-32
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| risk_score |
null |
| exploitability |
null |
| weighted_severity |
null |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-qyby-143d-b7gz |
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| Fixing_vulnerabilities |
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| Risk_score | null |
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| Resource_url | http://public2.vulnerablecode.io/packages/pkg:pypi/b2@2.5.1 |
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