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CVE-2021-21775

Date: July 7, 2021

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.

Language: C++

Severity Score

Related Resources (13)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-21775
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1229
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/
http://www.openwall.com/lists/oss-security/2021/07/23/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/
https://security-tracker.debian.org/tracker/CVE-2021-21775
https://nvd.nist.gov/vuln/detail/CVE-2021-21775
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/
https://security.alpinelinux.org/vuln/CVE-2021-21775
https://access.redhat.com/security/cve/CVE-2021-21775
https://www.debian.org/security/2021/dsa-4945
https://www.mend.io/vulnerability-database/CVE-2021-21775

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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