CVE-2020-11655
sqlite: malformed window-function query leads to DoS
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 3, 2020
Updated · October 14, 2026
Description
SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a malformed window-function query because the AggInfo object's initialization is mishandled.
Statement
It seems like this issue existed since sqlite-3.25.0, when window function (https://www.sqlite.org/windowfunctions.html) was added, but it lead to segmentation fault after https://www3.sqlite.org/cgi/src/info/712e47714863a8ed was committed, which could result in denial of service. This commit is a part of sqlite-3.30 release.
Therefore previous versions are not vulnerable to this flaw.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-665 · Improper Initialization