CVE-2020-6463: canonical ubuntu_linux Use After Free
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2020-6463DEBIAN-CVE-2020-6463
Published 21-05-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6463 is a high (CVSS 8.8) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 3.26% chance of exploitation in the next 30 days, higher than 88.2% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
3.26%
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 36 · Related 18DLA-2297-1DLA-2310-1DSA-4714-1DSA-4736-1DSA-4740-1MGASA-2020-0318MGASA-2020-0320OPENSUSE-SU-2020:0823-1OPENSUSE-SU-2020:0832-1OPENSUSE-SU-2020:1147-1OPENSUSE-SU-2020:1155-1OPENSUSE-SU-2020:1179-1OPENSUSE-SU-2020:1189-1OPENSUSE-SU-2020:1205-1OPENSUSE-SU-2024:10600-1OPENSUSE-SU-2024:10601-1OPENSUSE-SU-2024:10681-1OPENSUSE-SU-2024:12948-1OPENSUSE-SU-2024:14572-1RHSA-2020:1970RHSA-2020:3229RHSA-2020:3233RHSA-2020:3241RHSA-2020:3253RHSA-2020:3254RHSA-2020:3341RHSA-2020:3342RHSA-2020:3343RHSA-2020:3344RHSA-2020:3345SUSE-SU-2020:14456-1SUSE-SU-2020:2100-1SUSE-SU-2020:2118-1SUSE-SU-2020:2147-1SUSE-SU-2020:2179-1USN-4443-1
Timeline
- 21-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in ANGLE in Google Chrome prior to 81.0.4044.122 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
3.26%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
0.00 pp
From 3.26% on 19-09-2026
19-09-202619-10-2026
EPSS score3.26%
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
Ubuntu6 products
- chromium-browser< 81.0.4044.122-0ubuntu0.16.04.1 | < 81.0.4044.122-0ubuntu0.18.04.1
- firefox< 79.0+build1-0ubuntu0.16.04.2 | < 79.0+build1-0ubuntu0.18.04.1 | < 79.0+build1-0ubuntu0.20.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Debian4 products
- chromium< 83.0.4103.83-1
- firefox-esr< 68.11.0esr-1
- thunderbird< 1:68.11.0-1
- debian_linuxEOL9.0 | 10.0
Opensuse2 products
- backports_sle15.0:sp1
- leapEOL15.1 | 15.2
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 20.04
Fedoraproject1 product
- fedoraEOL31 | 32
Google1 product
- chrome≥ unspecified, < 81.0.4044.122 | < 81.0.4044.122
6 vendors · 15 products
References
24 links- chromereleases.googleblog.com/2020/04/stable-channel-update-for-desktop_21.htmlX Refsource MISCREPORTRelease NotesVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/07/msg00027.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 24 references
- lists.debian.org/debian-lts-announce/2020/08/msg00006.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00008.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00011.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory