SB2022091540 - Ubuntu update for sqlite3

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2020-35525)

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

The vulnerability exists due to a NULL pointer dereference error in the INTERSEC query processing. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

2) Out-of-bounds read (CVE-ID: CVE-2020-35527)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when handling ALTER TABLE for views that have a nested FROM clause. A remote attacker can pass specially crafted input to the application, trigger an out-of-bounds read error and read contents of memory on the system.

3) Input validation error (CVE-ID: CVE-2021-20223)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input within the fts5UnicodeTokenize() function in ext/fts5/fts5_tokenize.c, which caused the unicode61 tokenizer configured to treat unicode "control-characters" (class Cc), was treating embedded nul characters as tokens. A remote attacker can pass specially crafted input to the application and bypass implemented security restrictions.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-5615-1