CVE-2018-20506

Name: CVE-2018-20506
Creator: NVD / NIST
Published: 2019-04-03T18:29:01.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 7.53%

Last modified Jun 17, 2026

CVE-2018-20506 is a vulnerability of currently unknown severity. SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.. EPSS estimates a 7.53% chance of exploitation in the next 30 days.

Description

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.

Metrics

EPSS Probability

7.53%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Sqlite	Sqlite	< 3.25.3
Apple	Iphone Os	< 12.1.3
Apple	Mac Os X	< 10.14.3
Apple	Tvos	< 12.1.2
Apple	Watchos	< 5.1.3
Apple	Icloud	<= 7.10
Apple	Itunes	<= 12.9.3
Opensuse	Leap	42.3

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00070.htmlMailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/62Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/64Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/66Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/67Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/68Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/69Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/106698Third Party Advisory, VDB Entry
https://kc.mcafee.com/corporate/index?page=content&id=SB10365
https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html
https://seclists.org/bugtraq/2019/Jan/28Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/29Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/31Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/32Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/33Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/39Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0004/Third Party Advisory
https://sqlite.org/src/info/940f2adc8541a838Vendor Advisory
https://support.apple.com/kb/HT209443Third Party Advisory
https://support.apple.com/kb/HT209446Third Party Advisory
https://support.apple.com/kb/HT209447Third Party Advisory
https://support.apple.com/kb/HT209448Third Party Advisory
https://support.apple.com/kb/HT209450Third Party Advisory
https://support.apple.com/kb/HT209451Third Party Advisory
https://usn.ubuntu.com/4019-1/
https://usn.ubuntu.com/4019-2/
https://www.oracle.com/security-alerts/cpuapr2020.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00070.htmlMailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/62Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/64Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/66Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/67Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/68Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2019/Jan/69Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/106698Third Party Advisory, VDB Entry
https://kc.mcafee.com/corporate/index?page=content&id=SB10365
https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html
https://seclists.org/bugtraq/2019/Jan/28Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/29Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/31Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/32Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/33Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/39Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0004/Third Party Advisory
https://sqlite.org/src/info/940f2adc8541a838Vendor Advisory
https://support.apple.com/kb/HT209443Third Party Advisory
https://support.apple.com/kb/HT209446Third Party Advisory
https://support.apple.com/kb/HT209447Third Party Advisory
https://support.apple.com/kb/HT209448Third Party Advisory
https://support.apple.com/kb/HT209450Third Party Advisory
https://support.apple.com/kb/HT209451Third Party Advisory
https://usn.ubuntu.com/4019-1/
https://usn.ubuntu.com/4019-2/
https://www.oracle.com/security-alerts/cpuapr2020.html

Timeline

Published: Apr 3, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20506?

How severe is CVE-2018-20506?

Severity scoring for CVE-2018-20506 is pending analysis. The EPSS model estimates a 7.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20506?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20506?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST