CVE-2019-14249 : Exploit Details and Defense Strategies

A vulnerability in the dwarf_elf_load_headers.c module of the libdwarf library prior to 2019-07-05 could lead to a denial of service attack by triggering a division by zero error when processing ELF files with a zero-size section group.

Understanding CVE-2019-14249

This CVE identifies a specific vulnerability in the libdwarf library that could be exploited to cause a denial of service attack.

What is CVE-2019-14249?

The vulnerability in the dwarf_elf_load_headers.c module of libdwarf library allows attackers to trigger a division by zero error by processing ELF files with a zero-size section group (SHT_GROUP).

The Impact of CVE-2019-14249

Exploiting this vulnerability could result in a denial of service attack, affecting the availability of the system or application.

Technical Details of CVE-2019-14249

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in dwarf_elf_load_headers.c of libdwarf before 2019-07-05 enables attackers to cause a denial of service through a division by zero error when handling ELF files with a zero-size section group.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by processing ELF files containing a section group with a zero size, as demonstrated by the dwarfdump tool.

Mitigation and Prevention

Protecting systems from CVE-2019-14249 requires specific actions to mitigate the risk.

Immediate Steps to Take

Update the libdwarf library to a version released after 2019-07-05.
Monitor for any unusual activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Conduct security assessments and audits to identify and address potential weaknesses.

Patching and Updates

Ensure timely application of security patches and updates to the libdwarf library to prevent exploitation of this vulnerability.