CVE-2017-17712 : Vulnerability Insights and Analysis
Discover the critical CVE-2017-17712 vulnerability in the Linux kernel allowing local users to execute arbitrary code and gain elevated privileges. Learn about the impact, affected systems, exploitation, and mitigation steps.
A vulnerability has been discovered in the Linux kernel version up to 4.14.6, specifically in the raw_sendmsg() function located in net/ipv4/raw.c. This vulnerability arises due to a race condition found in the inet->hdrincl code, resulting in the usage of an uninitialized stack pointer. Exploitation of this vulnerability can enable a local user to execute arbitrary code and potentially acquire elevated privileges.
Understanding CVE-2017-17712
This CVE identifies a critical vulnerability in the Linux kernel that can be exploited by a local user to execute arbitrary code.
What is CVE-2017-17712?
The vulnerability in the Linux kernel version up to 4.14.6 allows a local user to exploit a race condition in the inet->hdrincl code, leading to the use of an uninitialized stack pointer.
The Impact of CVE-2017-17712
Exploitation of this vulnerability can result in a local user executing arbitrary code on the affected system, potentially gaining elevated privileges.
Technical Details of CVE-2017-17712
This section provides detailed technical information about the CVE.
Vulnerability Description
The raw_sendmsg() function in net/ipv4/raw.c in the Linux kernel through 4.14.6 has a race condition in inet->hdrincl that leads to uninitialized stack pointer usage, allowing a local user to execute code and gain privileges.
Affected Systems and Versions
- Affected systems: Linux kernel versions up to 4.14.6
- Affected function: raw_sendmsg() in net/ipv4/raw.c
Exploitation Mechanism
The vulnerability arises due to a race condition in the inet->hdrincl code, enabling the use of an uninitialized stack pointer by a local user to execute arbitrary code.
Mitigation and Prevention
Protecting systems from CVE-2017-17712 requires immediate action and long-term security practices.
Immediate Steps to Take
- Apply patches provided by the Linux kernel maintainers promptly.
- Monitor official sources for security advisories related to this vulnerability.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement the principle of least privilege to restrict user capabilities.
Patching and Updates
- Stay informed about security updates and patches released by Linux kernel maintainers.
- Ensure timely application of patches to mitigate the risk of exploitation.