CVE-2023-21255 : What You Need to Know
Learn about CVE-2023-21255, a critical vulnerability in Android's kernel that allows local privilege escalation without extra permissions. Mitigate with prompt patching and updates.
This CVE-2023-21255 was assigned by google_android and was published on July 12, 2023. It involves a possible memory corruption leading to local escalation of privilege in Android.
Understanding CVE-2023-21255
This CVE involves a memory corruption issue in Android's kernel that could allow an attacker to escalate local privileges without the need for additional execution permissions.
What is CVE-2023-21255?
CVE-2023-21255 refers to a vulnerability present in multiple functions of binder.c in Android's kernel. It is categorized as an elevation of privilege vulnerability.
The Impact of CVE-2023-21255
The impact of this vulnerability is significant as it could allow an attacker to gain escalated privileges locally without requiring any additional execution privileges. The exploitation does not rely on user interaction, making it even more critical.
Technical Details of CVE-2023-21255
This section provides more detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in multiple functions of binder.c leads to memory corruption due to a use after free scenario. This memory corruption issue could be exploited for local privilege escalation without the need for extra execution privileges.
Affected Systems and Versions
The affected system in this CVE is Android, specifically the Android kernel. The particular version impacted by this vulnerability is not specified in the provided data.
Exploitation Mechanism
The exploitation of this vulnerability can allow an attacker to locally escalate their privileges without requiring any additional privileges or user interaction.
Mitigation and Prevention
To mitigate the risks associated with CVE-2023-21255, certain steps need to be taken for immediate and long-term security.
Immediate Steps to Take
Immediate actions to protect systems from potential exploitation of this vulnerability include monitoring for security advisories from relevant vendors and applying patches promptly.
Long-Term Security Practices
Long-term security measures involve maintaining up-to-date security protocols and regularly checking for security updates from trusted sources.
Patching and Updates
It is crucial for users to apply any patches or updates released by Google for the Android kernel to address the vulnerability and enhance system security. Regularly updating systems can help in preventing potential attacks exploiting this CVE.