SB2022012129 - Fedora 35 update for webkit2gtk3
Published: January 21, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Security restrictions bypass (CVE-ID: CVE-2021-30887)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due an error within the WebKit component. A remote attacker can trick the victim to open a specially crafted website and bypass Content Security Policy restrictions.
2) Universal Cross-site scripting (CVE-ID: CVE-2021-30890)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in WebKLit. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
3) Buffer overflow (CVE-ID: CVE-2021-30934)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Use-after-free (CVE-ID: CVE-2021-30936)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in WebKit when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
5) Use-after-free (CVE-ID: CVE-2021-30951)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in WebKit when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
6) Integer overflow (CVE-ID: CVE-2021-30952)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in WebKit. A remote attacker can trick the victim to visit a specially crafted web page, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Out-of-bounds read (CVE-ID: CVE-2021-30953)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted website, trick the victim into opening it using the affected software, trigger out-of-bounds read error and execute arbitrary code on the target system.
8) Type Confusion (CVE-ID: CVE-2021-30954)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim to visit a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Race condition (CVE-ID: CVE-2021-30984)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a race condition in WebKit. A local user can trick the victim to visit a specially crafted website, trigger a race condition and execute arbitrary code on the system.
Remediation
Install update from vendor's website.