Integer overflow in Google Chrome
CVE-2018-20346
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.103 (95.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.103 · newest: 0.103 · change: 0.000
Affected products
- Google Chrome
- Sqlite
- Debian Linux — versions 8.0
- openSUSE Leap — versions 15.0, 42.3
- Red Hat Linux — versions 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- worthdoingbadly.com/sqlitebug/ (Exploit, Third Party Advisory)
- support.apple.com/HT209446
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2018/12/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
- www.synology.com/security/advisory/Synology_SA_18_61 (Third Party Advisory)
- access.redhat.com/articles/3758321 (Third Party Advisory)
- support.apple.com/HT209443
- blade.tencent.com/magellan/index_en.html (Third Party Advisory)
- support.apple.com/HT209451
Frequently asked questions
- What is CVE-2018-20346?
- CVE-2018-20346 is a high-severity vulnerability in Google Chrome, classified under Integer Overflow or Wraparound. CVSS score: 8.1/10. Published 2018-12-21.
- How severe is CVE-2018-20346?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2018-20346 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.