CVE-2017-9044 in binutils
Summary
by MITRE
The print_symbol_for_build_attribute function in readelf.c in GNU Binutils 2017-04-12 allows remote attackers to cause a denial of service (invalid read and SEGV) via a crafted ELF file.
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Analysis
by VulDB Data Team • 12/04/2024
The vulnerability identified as CVE-2017-9044 represents a critical denial of service flaw within GNU Binutils, specifically affecting the readelf utility version from April 12, 2017. This issue manifests in the print_symbol_for_build_attribute function located within the readelf.c source file, which processes and displays symbol information from elf files. The vulnerability arises from inadequate input validation and memory handling when processing malformed elf files, creating a scenario where remote attackers can exploit the utility through crafted elf binaries.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious elf file that triggers an invalid memory read followed by a segmentation fault. The flaw stems from improper bounds checking and memory access patterns within the symbol processing logic, where the function attempts to access memory locations without validating the underlying data structure integrity. This type of vulnerability falls under CWE-125, which describes out-of-bounds read conditions, and CWE-119, which encompasses memory corruption vulnerabilities. The vulnerability demonstrates characteristics consistent with ATT&CK technique T1059.007, where adversaries leverage command-line interfaces to execute malicious code through manipulated input files.
The operational impact of CVE-2017-9044 extends beyond simple denial of service, as it can potentially disrupt automated build systems, security scanning tools, and continuous integration pipelines that rely on readelf for elf file analysis. When exploited, the vulnerability causes the readelf utility to crash with a segmentation fault, effectively rendering the tool unusable for its intended purpose. This disruption can cascade through security workflows where elf file inspection is a critical component of software verification processes. The vulnerability is particularly concerning in environments where automated tools process untrusted elf files, as it can be leveraged to create persistent service disruptions.
Mitigation strategies for CVE-2017-9044 involve immediate patching of GNU Binutils to the affected version, as the vulnerability was addressed in subsequent releases. Organizations should implement input validation measures for any elf file processing workflows, including the use of sandboxed environments and file format validation before processing. Additionally, system administrators should consider implementing access controls that limit execution of readelf against untrusted input and establish monitoring for abnormal process termination patterns. The vulnerability highlights the importance of robust input validation in security-critical utilities and underscores the need for comprehensive testing of file processing functions against malformed inputs.