CVE-2020-6493: debian debian_linux Use After Free
CVSS: 9.6v3.1CriticalModified
AliasesUBUNTU-CVE-2020-6493DEBIAN-CVE-2020-6493
Published 03-06-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6493 is a critical (CVSS 9.6) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.72% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities.
CVSS score
9.6/10
010
Critical · v3.1 (NVD)EPSS score
1.72%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 6 · Related 4Timeline
- 03-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in WebAuthentication in Google Chrome prior to 83.0.4103.97 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.6Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.72%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
+0.04 pp
From 1.68% on 19-09-2026
19-09-202619-10-2026
EPSS score1.72%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- chromium< 83.0.4103.106-1
- debian_linuxEOL9.0 | 10.0
Google1 product
- chrome≥ unspecified, < 83.0.4103.97 | < 83.0.4103.97
Ubuntu1 product
- chromium-browser< 84.0.4147.105-0ubuntu0.16.04.1 | < 84.0.4147.105-0ubuntu0.18.04.1
4 vendors · 6 products
References
9 links- chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop.htmlX Refsource MISCREPORTVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
