Vulnerability identifier: #VU77807

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31239

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
SQLite
Server applications / Database software

Vendor: SQLite

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in ext/misc/appendvfs.c. A local user can trigger an out-of-bounds read error and crash the database.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SQLite: 3.35.2 - 3.35.5

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External links
http://github.com/Tsiming/Vulnerabilities/blob/main/SQLite/CVE-2021-31239
http://www.sqlite.org/forum/forumpost/d9fce1a89b
http://www.sqlite.org/src/info/04f6439f4d9b9b1f

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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.