CVE-2017-7300 : What You Need to Know
Learn about CVE-2017-7300, a vulnerability in the Binary File Descriptor (BFD) library version 2.28 of GNU Binutils, leading to a heap-based buffer over-read issue in the GNU linker (ld). Find mitigation steps and prevention measures.
A vulnerability in the Binary File Descriptor (BFD) library version 2.28 of GNU Binutils can lead to a heap-based buffer over-read issue in the GNU linker (ld).
Understanding CVE-2017-7300
This CVE involves a vulnerability in the aout_link_add_symbols function in bfd/aoutx.h due to incomplete validation of string offsets during symbol loading.
What is CVE-2017-7300?
The vulnerability in the Binary File Descriptor (BFD) library (libbfd) version 2.28 of GNU Binutils can result in a heap-based buffer over-read issue, specifically an off-by-one error, causing a program crash in the GNU linker (ld).
The Impact of CVE-2017-7300
The vulnerability can be exploited to crash the GNU linker (ld) program, potentially leading to denial of service or other security implications.
Technical Details of CVE-2017-7300
This section provides more technical insights into the CVE.
Vulnerability Description
The issue arises from incomplete validation of string offsets during symbol loading, resulting in a heap-based buffer over-read, specifically an off-by-one error.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: 2.28 of GNU Binutils
Exploitation Mechanism
The vulnerability can be exploited by manipulating string offsets during symbol loading, leading to a heap-based buffer over-read issue.
Mitigation and Prevention
Protecting systems from CVE-2017-7300 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Monitor vendor communications for security advisories.
- Consider restricting access to affected systems.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Conduct security assessments and audits to identify vulnerabilities.
- Implement secure coding practices to prevent similar issues.
- Educate developers and IT staff on secure coding and best practices.
Patching and Updates
- Check for patches or updates from GNU Binutils or relevant vendors.
- Apply patches following recommended procedures to mitigate the vulnerability effectively.