What’s Vulnerable › Vulnerabilities

CVE-2018-20346

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-21 · updated 2026-06-17
• Weakness: CWE-190

Description

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur 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), aka Magellan.

Affected products

• Debian Linux: 8.0
• Google Chrome: before 71.0.3578.80 — fixed in 71.0.3578.80
• openSUSE Leap: 15.0, 42.3
• RedHat Linux: 6.0
• SQLite: before 3.25.3 — fixed in 3.25.3

How to fix

Upgrade to a fixed version: Google Chrome 71.0.3578.80; SQLite 3.25.3. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00070.html
• http://www.securityfocus.com/bid/106323
• https://access.redhat.com/articles/3758321
• https://blade.tencent.com/magellan/index_en.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1659379
• https://bugzilla.redhat.com/show_bug.cgi?id=1659677
• https://chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.html
• https://chromium.googlesource.com/chromium/src/+/c368e30ae55600a1c3c9cb1710a54f9c55de786e
• https://crbug.com/900910
• https://github.com/zhuowei/worthdoingbadly.com/blob/master/_posts/2018-12-14-sqlitebug.html
• https://kc.mcafee.com/corporate/index?page=content&id=SB10365

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