Bug 1692357 (CVE-2019-9937)

Summary:	CVE-2019-9937 sqlite: null-pointer dereference in function fts5ChunkIterate in sqlite3.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	databases-maint, hhorak, itamar, jakub.dornak, mdogra, mschorm, pkubat, praiskup, wilmer5
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in SQLite due to a NULL pointer dereference in the fts5ChunkIterate function within sqlite3.c, where an attacker could exploit this flaw by creating a specially crafted table, causing the application to crash and resulting in a denial of service condition.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-27 03:27:02 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1692358, 1694734
Bug Blocks:	1692370

Description Dhananjay Arunesh 2019-03-25 12:49:17 UTC

In SQLite 3.27.2, interleaving reads and writes in a single transaction with an fts5 virtual table will lead to a NULL Pointer Dereference in fts5ChunkIterate in sqlite3.c. This is related to ext/fts5/fts5_hash.c and ext/fts5/fts5_index.c.

References:
https://sqlite.org/src/info/45c73deb440496e8
https://www.mail-archive.com/sqlite-users@mailinglists.sqlite.org/msg114383.html
https://www.mail-archive.com/sqlite-users@mailinglists.sqlite.org/msg114393.html

Comment 1 Dhananjay Arunesh 2019-03-25 12:50:35 UTC

Created sqlite tracking bugs for this issue:

Affects: fedora-all [bug 1692358]

Comment 6 Marco Benatto 2019-03-29 19:20:32 UTC

Statement:

This issue did not affect the versions of sqlite as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include support for fts5.

Comment 9 Marco Benatto 2019-05-15 12:03:39 UTC

Upstream commit for this issue:
https://sqlite.org/src/info/45c73deb440496e8

Comment 13 Red Hat Bugzilla 2025-06-08 04:25:02 UTC

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days