Out-of-bounds Read in Google Chrome
CVE-2021-21198
Out of bounds read in IPC in Google Chrome prior to 89.0.4389.114 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_30.html (Release Notes, Vendor Advisory)
- crbug.com/1184399 (Permissions Required, Vendor Advisory)
- security.gentoo.org/glsa/202104-08 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- packetstormsecurity.com/files/162973/Chrome-Legacy-ipc-Message-Passed-Via-Share… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21198?
- CVE-2021-21198 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 7.4/10. Published 2021-04-09.
- How severe is CVE-2021-21198?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2021-21198 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.