#VU28773 Use-after-free in SQLite - CVE-2020-13871

Vulnerability identifier: #VU28773

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-13871

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SQLite
Server applications / Database software

Vendor: SQLite

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in resetAccumulator() function in select.c. A remote attacker can pass specially crafted data to the application, trigger a use-after-free error and crash the service or execute arbitrary code on the target system

Mitigation
Install update from vendor's website.

Vulnerable software versions

SQLite: 3.32.2

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External links
https://www.sqlite.org/src/info/79eff1d0383179c4
https://www.sqlite.org/src/info/c8d3b9f0a750a529
https://www.sqlite.org/src/info/cd708fa84d2aaaea

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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.