CVE-2020-6556: debian debian_linux Out-of-bounds Write
CVSS: 9.3v2.0HighModified
AliasesUBUNTU-CVE-2020-6556DEBIAN-CVE-2020-6556openSUSE-SU-2020:1260-1openSUSE-SU-2020:1263-1
Published 21-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6556 is a high (CVSS 9.3) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 3.29% chance of exploitation in the next 30 days, higher than 88.4% of scored vulnerabilities.
CVSS score
9.3/10
010
High · v2.0 (NVD)EPSS score
3.29%
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 3Timeline
- 21-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Heap buffer overflow in SwiftShader in Google Chrome prior to 84.0.4147.135 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 · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
High 9.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
3.29%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
0.00 pp
From 3.29% on 21-09-2026
21-09-202621-10-2026
EPSS score3.29%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Opensuse3 products
- leapEOL15.1 | 15.2
- chromium&distro=openSUSE Leap 15.1< 84.0.4147.135-lp151.2.120.1
- chromium&distro=openSUSE Leap 15.2< 84.0.4147.135-lp152.2.17.1
Debian2 products
- chromium< 87.0.4280.88-0.1
- debian_linuxEOL10.0
Fedoraproject1 product
- fedoraEOL33
Google1 product
- chrome≥ unspecified, < 84.0.4147.135 | < 84.0.4147.125
Ubuntu1 product
- chromium-browser< 85.0.4183.83-0ubuntu0.16.04.2 | < 85.0.4183.83-0ubuntu0.18.04.2
5 vendors · 8 products
References
12 links- chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop_18.htmlX Refsource MISCVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00049.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/archives/…Advisory
Show all 12 references
- lists.opensuse.org/archives/…Advisory