Time-of-check Time-of-use (TOCTOU) Race Condition in B2 Python SDK
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-23651 |
| CWE-ID | CWE-367 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
B2 Python SDK Universal components / Libraries / Libraries used by multiple products |
| Vendor | Backblaze |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Time-of-check Time-of-use (TOCTOU) Race Condition
EUVDB-ID: #VU60961
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-23651
CWE-ID:
CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a time-of-check-time-of-use (TOCTOU) race condition. A local user can gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsB2 Python SDK: 0.1.4 - 1.14.0
External linkshttp://github.com/Backblaze/b2-sdk-python/commit/62476638986e5b6d7459aca5ef8ce220760226e0
http://pypi.org/project/b2sdk/
http://github.com/Backblaze/b2-sdk-python/security/advisories/GHSA-p867-fxfr-ph2w
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
