SB2025120407 - Debian update for webkit2gtk
Published: December 4, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) Improper access control (CVE-ID: CVE-2025-43392)
The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.
The vulnerability exists due to incorrect handling of cached data in WebKit Canvas. A remote attacker can trick the victim into visiting a specially crafted website and exfiltrate data cross-origin.
2) Buffer overflow (CVE-ID: CVE-2025-43425)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and crash the browser.
3) State issues (CVE-ID: CVE-2025-43427)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a state management issue in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.
4) Buffer overflow (CVE-ID: CVE-2025-43429)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and crash the browser.
5) Input validation error (CVE-ID: CVE-2025-43430)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim into opening a specially crafted web page and crash the browser.
6) Buffer overflow (CVE-ID: CVE-2025-43431)
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 trick the victim into visiting a specially crafted website. trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Use-after-free (CVE-ID: CVE-2025-43432)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.
8) Use after free (CVE-ID: CVE-2025-43434)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.
9) Input validation error (CVE-ID: CVE-2025-43440)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser.
10) Input validation error (CVE-ID: CVE-2025-43443)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser.
Remediation
Install update from vendor's website.