CVE-2021-21775

Published on: 07/07/2021 12:00:00 AM UTC

Last Modified on: 08/24/2022 07:43:00 PM UTC

CVE-2021-21775

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L

Certain versions of Debian Linux from Debian contain the following vulnerability:

A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage.

  • CVE-2021-21775 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 8 - HIGH

Attack
Vector ⓘ		 Attack
Complexity		 Privileges
Required		 User
Interaction
NETWORK LOW LOW REQUIRED
Scope Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 6 - MEDIUM

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK MEDIUM SINGLE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags ⓘ Link
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2021-0004 www.openwall.com
text/html
 URL Logo MLIST [oss-security] 20210723 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0004
[SECURITY] Fedora 34 Update: webkit2gtk3-2.32.3-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2021-cf7d8c7b1a
Debian -- Security Information -- DSA-4945-1 webkit2gtk www.debian.org
Depreciated Link
text/html
 URL Logo DEBIAN DSA-4945
TALOS-2021-1229 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence talosintelligence.com
text/html
 URL Logo MISC talosintelligence.com/vulnerability_reports/TALOS-2021-1229
[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.3-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2021-3de956ceee
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Related QID Numbers

  • 159499 Oracle Enterprise Linux Security Update for GNOME (ELSA-2021-4381)
  • 178727 Debian Security Update for webkit2gtk (DSA 4945-1)
  • 179780 Debian Security Update for webkit2gtkwpewebkit (CVE-2021-21775)
  • 198444 Ubuntu Security Notification for WebKitGTK vulnerabilities (USN-5024-1)
  • 239811 Red Hat Update for gnome security (RHSA-2021:4381)
  • 281748 Fedora Security Update for webkit2gtk3 (FEDORA-2021-cf7d8c7b1a)
  • 281779 Fedora Security Update for webkit2gtk3 (FEDORA-2021-3de956ceee)
  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 501942 Alpine Linux Security Update for webkit2gtk
  • 710570 Gentoo Linux WebkitGTK+ Multiple Vulnerabilities (GLSA 202202-01)
  • 750913 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:2600-1)
  • 750917 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:2598-1)
  • 750943 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:1101-1)
  • 750971 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:2762-1)
  • 940070 AlmaLinux Security Update for GNOME (ALSA-2021:4381)
  • 960077 Rocky Linux Security Update for GNOME (RLSA-2021:4381)

Exploit/POC from Github

A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKi…

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System		DebianDebian Linux10.0AllAllAll
Operating
System		FedoraprojectFedora33AllAllAll
Operating
System		FedoraprojectFedora34AllAllAll
ApplicationWebkitgtkWebkitgtk2.30.4AllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:a:webkitgtk:webkitgtk:2.30.4:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-21775 : A use-after-free vulnerability exists in the way certain events are processed for ImageLoader obje… twitter.com/i/web/status/1… 2021-07-07 22:05:19
Reddit Logo Icon /r/netcve CVE-2021-21775 2021-07-07 22:42:39
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