CVE-2018-6123: debian debian_linux Use After Free
CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-6123
Published 09-01-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-6123 is a medium (CVSS 6.5) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.88% chance of exploitation in the next 30 days, higher than 79.1% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.0 (NVD)EPSS score
1.88%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 2Timeline
- 09-01-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A use after free in Blink in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.88%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.88% on 19-09-2026
19-09-202619-10-2026
EPSS score1.88%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
Redhat3 products
Ubuntu2 products
- chromium-browser< 67.0.3396.99-0ubuntu0.16.04.2 | < 67.0.3396.99-0ubuntu0.18.04.1
- oxide-qtAll versions (No fix recorded)
Debian1 product
- debian_linuxEOL9.0
Google1 product
- chrome≥ unspecified, < 67.0.3396.62 | < 67.0.3396.62
4 vendors · 7 products
References
8 links- chromereleases.googleblog.com/2018/05/stable-channel-update-for-desktop_58.htmlX Refsource CONFIRMREPORT
- crbug.com/835639X Refsource MISC
