#VU23789 Input validation error in SQLite - CVE-2019-19317

Vulnerability identifier: #VU23789

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-19317

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SQLite
Server applications / Database software

Vendor: SQLite

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the lookupName() function in resolve.c, which leads to omitting bits from the colUsed bitmask in the case of a generated column. A remote attacker can perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SQLite: 3.7.0 - 3.30.1

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External links
https://github.com/sqlite/sqlite/commit/522ebfa7cee96fb325a22ea3a2464a63485886a8
https://github.com/sqlite/sqlite/commit/73bacb7f93eab9f4bd5a65cbc4ae242acf63c9e3

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.