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CVE-2021-21779

Published: Jul 8, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-416
NVD MITRE
8.8CVSSHIGH
EPSS Score
2.9%
Top 14.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-416

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
WebKitApple Inc.
On-prem
Mobile Apps / ios-app
ОСОН ОСнова ОnyxАО «НППКТ»
On-premOS
Operating Systems / linux-distro
webkitgtkwebkitgtk
LibraryLibrary
OSS Libraries / generic-library
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
apple inc.commercialUSMobile Appsaka apple
ао «нппкт»commercialRUOperating Systems
webkitgtkoss-projectConsumer Softwareaka webkitgtk+, webkit2gtk3, webkit2gtk
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2021-21779
nvd.nist.gov
https://security-tracker.debian.org/tracker/CVE-2021-21779
security-tracker.debian.org
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238
talosintelligence.com
and 8 more references View all →

Timeline

Published
Jul 8, 2021
Last Updated
Nov 21, 2024

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