CVE-2020-11793: canonical ubuntu_linux Use After Free
CVSS: 8.8v3.1HighModified
AliasesMGASA-2020-0177UBUNTU-CVE-2020-11793USN-4331-1DEBIAN-CVE-2020-11793DSA-4658-1
Published 17-04-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-11793 is a high (CVSS 8.8) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 2.94% chance of exploitation in the next 30 days, higher than 86.9% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
2.94%
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
- 17-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A use-after-free issue exists in WebKitGTK before 2.28.1 and WPE WebKit before 2.28.1 via crafted web content that allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash).
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
2.94%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
+0.04 pp
From 2.90% on 19-09-2026
19-09-202619-10-2026
EPSS score2.94%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu4 products
- qtwebkit-opensource-srcAll versions (No fix recorded)
- qtwebkit-sourceAll versions (No fix recorded)
- webkit2gtkAll versions (No fix recorded) | < 2.28.1-1 | < 2.28.1-0ubuntu0.18.04.1
- webkitgtkAll versions (No fix recorded)
Debian2 products
- webkit2gtk< 2.28.1-1 | < 2.26.4-1~deb10u3
- wpewebkit< 2.28.1-1
Canonical1 product
- ubuntu_linuxEOL18.04 | 19.10
Fedoraproject1 product
- fedoraEOL30 | 31 | 32
Mageia1 product
- webkit2< 2.28.1-1.mga7
Opensuse1 product
- leapEOL15.1
Webkitgtk1 product
- webkitgtk< 2.28.1
Wpewebkit1 product
- wpe_webkit< 2.28.1
8 vendors · 12 products
References
15 links- lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
