Information disclosure in Facebook Zstandard
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | N/A |
| CWE-ID | CWE-276 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Zstandard Universal components / Libraries / Libraries used by multiple products |
| Vendor | Facebook Inc. |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated 04.03.2021
Added fixed version.
1) Incorrect default permissions
EUVDB-ID: #VU50676
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to zstd temporarily
exposes a world-readable version of its input even if the original
file had restrictive permissions. A local user with access to the system can gain access to sensitive information.
Install update from vendor's website.
Vulnerable software versionsZstandard: 1.0.0 - 1.4.8
External linkshttp://www.debian.org/security/2021/dsa-4850
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.
