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CVE-2018-18342

Execution of user supplied Javascript during object deserialization can update object length...

8.8 HighFix available

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.65%Up 1.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
CVE-2018-18342
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-787
Updated
2026-11-02
CVE List No score

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
CVE-2018-18342
Updated
2026-11-02
EUVDEUVD-2018-10073 No score

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
EUVD-2018-10073
Updated
2026-11-03
GitHub AdvisoriesGHSA-3r84-3353-c3qj 8.8

Execution of user supplied Javascript during object deserialization can update object length...

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
GHSA-3r84-3353-c3qj
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
OSV 8.8

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
CVE-2018-18342
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-18342 8.8

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
DEBIAN-CVE-2018-18342
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVRHSA-2018:3803 8.8

Red Hat Security Advisory: chromium-browser security update

Record
RHSA-2018:3803
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-18342 8.8

Execution of user supplied Javascript during object deserialization can update object length leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Record
UBUNTU-CVE-2018-18342
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2018:4143-1 No score

Security update for Chromium

This update to Chromium 71.0.3578.98 fixes the following issues:

Security issues fixed (boo#1118529):

  • CVE-2018-17480: Out of bounds write in V8
  • CVE-2018-17481: Use after frees in PDFium
  • CVE-2018-18335: Heap buffer overflow in Skia
  • CVE-2018-18336: Use after free in PDFium
  • CVE-2018-18337: Use after free in Blink
  • CVE-2018-18338: Heap buffer overflow in Canvas
  • CVE-2018-18339: Use after free in WebAudio
  • CVE-2018-18340: Use after free in MediaRecorder
  • CVE-2018-18341: Heap buffer overflow in Blink
  • CVE-2018-18342: Out of bounds write in V8
  • CVE-2018-18343: Use after free in Skia
  • CVE-2018-18344: Inappropriate implementation in Extensions
  • Multiple issues in SQLite via WebSQL
  • CVE-2018-18345: Inappropriate implementation in Site Isolation
  • CVE-2018-18346: Incorrect security UI in Blink
  • CVE-2018-18347: Inappropriate implementation in Navigation
  • CVE-2018-18348: Inappropriate implementation in Omnibox
  • CVE-2018-18349: Insufficient policy enforcement in Blink
  • CVE-2018-18350: Insufficient policy enforcement in Blink
  • CVE-2018-18351: Insufficient policy enforcement in Navigation
  • CVE-2018-18352: Inappropriate implementation in Media
  • CVE-2018-18353: Inappropriate implementation in Network Authentication
  • CVE-2018-18354: Insufficient data validation in Shell Integration
  • CVE-2018-18355: Insufficient policy enforcement in URL Formatter
  • CVE-2018-18356: Use after free in Skia
  • CVE-2018-18357: Insufficient policy enforcement in URL Formatter
  • CVE-2018-18358: Insufficient policy enforcement in Proxy
  • CVE-2018-18359: Out of bounds read in V8
  • Inappropriate implementation in PDFium
  • Use after free in Extensions
  • Inappropriate implementation in Navigation
  • Insufficient policy enforcement in Navigation
  • Insufficient policy enforcement in URL Formatter
  • Various fixes from internal audits, fuzzing and other initiatives
  • CVE-2018-17481: Use after free in PDFium (boo#1119364)

The following changes are included:

  • advertisements posing as error messages are now blocked
  • Automatic playing of content at page load mostly disabled
  • New JavaScript API for relative time display
Record
openSUSE-SU-2018:4143-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10681-1 No score

chromedriver-93.0.4577.82-1.1 on GA media

These are all security issues fixed in the chromedriver-93.0.4577.82-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10681-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:12948-1 No score

ungoogled-chromium-113.0.5672.92-1.1 on GA media

These are all security issues fixed in the ungoogled-chromium-113.0.5672.92-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12948-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
chromium
Debian:12
 before 71.0.3578.80-1
71.0.3578.80-1
chromium
Debian:13
 before 71.0.3578.80-1
71.0.3578.80-1
chromium
Debian:14
 before 71.0.3578.80-1
71.0.3578.80-1
chromium-browser
Debian:9
 before 71.0.3578.80-1~deb9u1, plus listed versions
59.0.3071.104-159.0.3071.86-160.0.3112.72-160.0.3112.78-160.0.3112.78-1~deb9u1
Show 45 moreShow less
61.0.3163.100-161.0.3163.100-1~deb9u161.0.3163.100-262.0.3202.75-162.0.3202.75-1~deb9u162.0.3202.89-162.0.3202.89-1~deb9u163.0.3239.30-163.0.3239.40-163.0.3239.84-163.0.3239.84-1~deb9u164.0.3282.119-164.0.3282.119-1~deb9u164.0.3282.119-265.0.3325.146-165.0.3325.146-265.0.3325.146-365.0.3325.146-465.0.3325.73-165.0.3325.74-166.0.3359.117-166.0.3359.117-1~deb9u166.0.3359.139-166.0.3359.181-166.0.3359.22-166.0.3359.22-266.0.3359.22-366.0.3359.26-166.0.3359.26-267.0.3396.48-167.0.3396.56-167.0.3396.57-167.0.3396.62-167.0.3396.62-267.0.3396.79-167.0.3396.79-267.0.3396.87-167.0.3396.87-1~deb9u168.0.3440.17-168.0.3440.25-168.0.3440.33-168.0.3440.42-168.0.3440.7-168.0.3440.75-168.0.3440.75-1~deb9u1
71.0.3578.80-1~deb9u1
chromium-browser
Red Hat:rhel_extras:6
 before 0:71.0.3578.80-1.el6_10
0:71.0.3578.80-1.el6_10
chromium-browser-debuginfo
Red Hat:rhel_extras:6
 before 0:71.0.3578.80-1.el6_10
0:71.0.3578.80-1.el6_10
chromium-browser
Ubuntu:16.04:LTS
 before 71.0.3578.80-0ubuntu0.16.04.1, plus listed versions
45.0.2454.101-0ubuntu1.120147.0.2526.73-0ubuntu1.121847.0.2526.106-0ubuntu1.122148.0.2564.82-0ubuntu1.122248.0.2564.116-0ubuntu1.1229
Show 38 moreShow less
49.0.2623.87-0ubuntu1.123249.0.2623.108-0ubuntu1.123350.0.2661.102-0ubuntu0.16.04.1.123751.0.2704.79-0ubuntu0.16.04.1.124252.0.2743.116-0ubuntu0.16.04.1.125053.0.2785.143-0ubuntu0.16.04.1.125453.0.2785.143-0ubuntu0.16.04.1.125755.0.2883.87-0ubuntu0.16.04.126356.0.2924.76-0ubuntu0.16.04.126857.0.2987.98-0ubuntu0.16.04.127658.0.3029.81-0ubuntu0.16.04.127758.0.3029.96-0ubuntu0.16.04.127958.0.3029.110-0ubuntu0.16.04.128159.0.3071.109-0ubuntu0.16.04.128959.0.3071.109-0ubuntu0.16.04.129160.0.3112.78-0ubuntu0.16.04.129360.0.3112.113-0ubuntu0.16.04.129861.0.3163.79-0ubuntu0.16.04.130061.0.3163.100-0ubuntu0.16.04.130662.0.3202.62-0ubuntu0.16.04.130862.0.3202.75-0ubuntu0.16.04.131362.0.3202.89-0ubuntu0.16.04.131562.0.3202.94-0ubuntu0.16.04.131763.0.3239.84-0ubuntu0.16.04.163.0.3239.132-0ubuntu0.16.04.164.0.3282.119-0ubuntu0.16.04.164.0.3282.140-0ubuntu0.16.04.164.0.3282.167-0ubuntu0.16.04.165.0.3325.181-0ubuntu0.16.04.166.0.3359.139-0ubuntu0.16.04.366.0.3359.181-0ubuntu0.16.04.167.0.3396.99-0ubuntu0.16.04.268.0.3440.75-0ubuntu0.16.04.168.0.3440.106-0ubuntu0.16.04.169.0.3497.81-0ubuntu0.16.04.170.0.3538.67-0ubuntu0.16.04.170.0.3538.77-0ubuntu0.16.04.170.0.3538.110-0ubuntu0.16.04.1
71.0.3578.80-0ubuntu0.16.04.1
chromium-browser
Ubuntu:18.04:LTS
 before 71.0.3578.80-0ubuntu0.18.04.1, plus listed versions
61.0.3163.100-0ubuntu1.137862.0.3202.62-0ubuntu0.17.10.138062.0.3202.89-0ubuntu1.138662.0.3202.94-0ubuntu1.138863.0.3239.84-0ubuntu1
Show 15 moreShow less
63.0.3239.108-0ubuntu164.0.3282.119-0ubuntu164.0.3282.140-0ubuntu164.0.3282.167-0ubuntu165.0.3325.146-0ubuntu165.0.3325.181-0ubuntu166.0.3359.139-0ubuntu0.18.04.366.0.3359.181-0ubuntu0.18.04.167.0.3396.99-0ubuntu0.18.04.168.0.3440.75-0ubuntu0.18.04.168.0.3440.106-0ubuntu0.18.04.169.0.3497.81-0ubuntu0.18.04.170.0.3538.67-0ubuntu0.18.04.170.0.3538.77-0ubuntu0.18.04.170.0.3538.110-0ubuntu0.18.04.1
71.0.3578.80-0ubuntu0.18.04.1
chromium
SUSE:Package Hub 12 SP2
 before 71.0.3578.98-80.1
71.0.3578.98-80.1
chromium
openSUSE:Tumbleweed
 before 93.0.4577.82-1.1
93.0.4577.82-1.1
chromium
openSUSE:Tumbleweed
 before 113.0.5672.92-1.1
113.0.5672.92-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-18342 is a high vulnerability (CVSS 8.8) in Google Chrome, published December 7, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.65%, the 85th percentile. Fixed in chromium 71.0.3578.80-1.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 19 versions and 2,236 references. The JSON record has them.

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