CVE-2020-35527

Publication date 1 September 2022

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

In SQLite 3.31.1, there is an out of bounds access problem through ALTER TABLE for views that have a nested FROM clause.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
sqlite	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected
sqlite3	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Fixed 3.31.1-4ubuntu0.4
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Ignored

Notes

rodrigo-zaiden

upstream fix adds a check with the macro IN_RENAME_OBJECT, that started to appear in version 3.25.0 (commit cf8f2895) as IN_RENAME_COLUMN and ended up in its current state in version 3.31.0 (commit e6dc1e5b). Backporting the fix to versions prior to 3.31 seems too risky and would likely introduce regressions. Also, there is a note in the upstream bug link saying that the issue happens "due to the two-size lookaside memory allocator added in version 3.31.0". So, sqlite3 for Ubuntu releases earlier than focal won't be fixed. sqlite source package does not have the vulnerable code.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
sqlite3	Upstream: https://www.sqlite.org/src/info/c431b3fd8fd0f6a6 Upstream: 0990c41

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H