CVE-2020-11655

SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a malformed window-function query because the AggInfo objects initialization is mishandled.

Weakness

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Software

Name	Vendor	Start Version	End Version
Sqlite	Sqlite	*	3.31.1 (including)
Sqlite	Ubuntu	bionic	*
Sqlite	Ubuntu	eoan	*
Sqlite	Ubuntu	groovy	*
Sqlite	Ubuntu	hirsute	*
Sqlite	Ubuntu	impish	*
Sqlite	Ubuntu	kinetic	*
Sqlite	Ubuntu	trusty	*
Sqlite	Ubuntu	trusty/esm	*
Sqlite	Ubuntu	xenial	*
Sqlite3	Ubuntu	eoan	*
Sqlite3	Ubuntu	focal	*
Sqlite3	Ubuntu	trusty	*
Sqlite3	Ubuntu	upstream	*

Potential Mitigations

Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2020-11655
CWE	https://cwe.mitre.org/data/definitions/665.html

Improper Initialization

Weakness

Affected Software

Potential Mitigations

References

CVE-2020-11655

Improper Initialization

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References