SB2018102510 - Denial of service vulnerabilities in elfutils 

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Main Vulnerability Database SB2018102510

SB2018102510 - Denial of service vulnerabilities in elfutils

Published: October 25, 2018

Security Bulletin ID SB2018102510
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Divide by zero (CVE-ID: CVE-2018-18521)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to due to improper handling of Executable and Linkable Format (ELF) files by the arlib_add_symbols function, as defined in the arlib.c source code file. A remote attacker can trick the victim into opening a specially crafted ELF file that submits malicious input, trigger a divide-by-zero condition and cause application to crash.


2) Null pointer dereference (CVE-ID: CVE-2018-18520)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to due to improper handling of Executable and Linkable Format (ELF) files by the elf_end function, as defined in the size.c source code file. A remote attacker can trick the victim into opening a specially crafted ELF file that submits malicious input, trigger NULL pointer dereference and cause application to crash.


Remediation

Install update from vendor's website.

References