CVE-2017-15056 Explained : Impact and Mitigation
Learn about CVE-2017-15056, a vulnerability in UPX version 3.94 that mishandles ELF headers, potentially leading to denial of service. Find out how to mitigate and prevent exploitation.
UPX version 3.94's mishandling of ELF headers in p_lx_elf.cpp can result in a denial of service or other impacts when processing specially crafted binary files.
Understanding CVE-2017-15056
What is CVE-2017-15056?
p_lx_elf.cpp in UPX 3.94 mishandles ELF headers, enabling remote attackers to trigger a denial of service or other unspecified impacts through a crafted binary file.
The Impact of CVE-2017-15056
The vulnerability can lead to a denial of service (application crash) or potentially have other impacts, such as an Invalid Pointer Read in the unpack() function of PackLinuxElf64.
Technical Details of CVE-2017-15056
Vulnerability Description
The mishandling of ELF headers in UPX version 3.94 can lead to a denial of service (application crash) or other impacts.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Version: 3.94
Exploitation Mechanism
The vulnerability can be exploited by remote attackers through a specially crafted binary file, causing an Invalid Pointer Read in the unpack() function of PackLinuxElf64.
Mitigation and Prevention
Immediate Steps to Take
- Update UPX to a patched version if available.
- Avoid running untrusted binary files.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement file integrity checks to detect tampering.
Patching and Updates
Apply patches provided by UPX to address the vulnerability.