Vulnerability Details : CVE-2021-21120
Use after free in WebSQL in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-21120
- cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21120
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21120
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-21120
-
The 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-21120
-
https://crbug.com/1160602
Inloggen - Google AccountsPermissions Required;Third Party Advisory
-
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html
Chrome Releases: Stable Channel Update for DesktopRelease Notes;Vendor Advisory
-
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21120
CVE-2021-21120 - Security Update Guide - Microsoft - Chromium CVE-2021-21120: Use after free in WebSQLPatch;Vendor Advisory
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