CVE-2020-6518: debian debian_linux Use After Free
CVSS: 9.3v2.0HighModified
AliasesUBUNTU-CVE-2020-6518DEBIAN-CVE-2020-6518
Published 22-07-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6518 is a high (CVSS 9.3) Use After Free vulnerability in debian debian_linux. EPSS estimates a 2.55% chance of exploitation in the next 30 days, higher than 84.8% of scored vulnerabilities.
CVSS score
9.3/10
010
High · v2.0 (NVD)EPSS score
2.55%
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 10 · Related 8Timeline
- 22-07-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in developer tools in Google Chrome prior to 84.0.4147.89 allowed a remote attacker who had convinced the user to use developer tools 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
2.55%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.55% on 19-09-2026
19-09-202619-10-2026
EPSS score2.55%
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
Opensuse2 products
- backports_sle15.0:sp2
- leapEOL15.1 | 15.2
Fedoraproject1 product
- fedoraEOL31 | 32
Google1 product
- chrome≥ unspecified, < 84.0.4147.89 | < 84.0.4147.89
Ubuntu1 product
- chromium-browser< 84.0.4147.105-0ubuntu0.16.04.1 | < 84.0.4147.105-0ubuntu0.18.04.1
5 vendors · 7 products
References
14 links- chromereleases.googleblog.com/2020/07/stable-channel-update-for-desktop.htmlX Refsource MISCRelease NotesVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00069.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00007.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00018.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00041.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
