CVE-2018-18356: canonical ubuntu_linux Integer Overflow or Wraparound
Vulnerability summary
CVE-2018-18356 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 3.28% chance of exploitation in the next 30 days, higher than 88.4% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 27 · Related 14Timeline
- 11-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An integer overflow in path handling lead to a use after free in Skia in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
3.28%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.6
- enterprise_linux_server_eus7.6
- enterprise_linux_server_tus7.6
Debian4 products
- chromium< 71.0.3578.80-1
- firefox-esr< 60.5.1esr-1
- thunderbird< 1:60.5.1-1
- debian_linuxEOL8.0 | 9.0
Ubuntu3 products
- chromium-browser< 71.0.3578.80-0ubuntu0.16.04.1 | < 71.0.3578.80-0ubuntu0.18.04.1
- firefox< 65.0.1+build2-0ubuntu0.14.04.1 | < 65.0.1+build2-0ubuntu0.16.04.1 | < 65.0.1+build2-0ubuntu0.18.04.1
- thunderbird< 1:60.5.1+build2-0ubuntu0.14.04.1 | < 1:60.5.1+build2-0ubuntu0.16.04.1 | < 1:60.5.1+build2-0ubuntu0.18.04.1
Alpine1 product
- firefox-esr< 60.5.2-r0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Google1 product
- chrome≥ unspecified, < 71.0.3578.80 | < 71.0.3578.80
Opensuse1 product
- leapEOL15.0
7 vendors · 17 products
References
26 links- crbug.com/883666X Refsource MISC
- chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.htmlX Refsource CONFIRM