CVE-2020-6542: debian debian_linux Use After Free
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2020-6542DEBIAN-CVE-2020-6542
Published 21-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6542 is a high (CVSS 8.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 2.03% chance of exploitation in the next 30 days, higher than 80.8% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
2.03%
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 9 · Related 7Timeline
- 21-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in ANGLE in Google Chrome prior to 84.0.4147.125 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
2.03%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
0.00 pp
From 2.03% on 21-09-2026
21-09-202621-10-2026
EPSS score2.03%
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
Debian2 products
- chromium< 87.0.4280.88-0.1
- debian_linuxEOL10.0
Fedoraproject1 product
- fedoraEOL33
Google1 product
- chrome≥ unspecified, < 84.0.4147.125 | < 84.0.4147.125
Ubuntu1 product
- chromium-browser< 85.0.4183.83-0ubuntu0.16.04.2 | < 85.0.4183.83-0ubuntu0.18.04.2
4 vendors · 5 products
References
9 links- chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.htmlX Refsource MISCRelease NotesVendor Advisory
- www.talosintelligence.com/vulnerability_reports/TALOS-2020-1127X Refsource MISCTechnical DescriptionThird Party Advisory
