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CVE-2020-24736: SQLite: View Ticket

Buffer Overflow vulnerability found in SQLite3 v.3.27.1 and before allows a local attacker to cause a denial of service via a crafted script.

CVE
#sql#vulnerability#dos#buffer_overflow

2019-02-22

21:35

• Fixed ticket [4feb3159]: Crash due to misuse of window functions. plus 5 other changes (artifact: 17c4d9a5 user: drh)

19:24

Internally, remove all references to a Window object that belongs to an expression in an ORDER BY clause if that expression is converted to an alias of a result-set expression. Fix for [4feb3159c6]. (check-in: 579b66ea user: dan tags: trunk)

18:44

• New ticket [4feb3159] Crash due to misuse of window functions.. (artifact: a24c0ec0 user: drh)

Ticket Hash:

4feb3159c6bc3f7e33959c233f91c347c584bebb

Title:

Crash due to misuse of window functions.

Status:

Fixed

Type:

Code_Defect

Severity:

Critical

Priority:

Immediate

Subsystem:

Unknown

Resolution:

Fixed

Last Modified:

2019-02-22 21:35:59

Version Found In:

3.27.1

User Comments:

drh added on 2019-02-22 18:44:24:

The following SQL statement causes a crash due to attempt to free memory that was not obtained from malloc():

SELECT +sum(0)OVER() ORDER BY +sum(0)OVER();

This problem has existed in all prior versions of SQLite that support window functions, beginning with version 3.25.0 (2018-09-15).

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