SB2018123105 - Multiple vulnerabilities in GNU Binutils

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Main Vulnerability Database SB2018123105

SB2018123105 - Multiple vulnerabilities in GNU Binutils

Published: December 31, 2018 Updated: January 10, 2019

Security Bulletin ID SB2018123105
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 20% Low 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2018-20623)

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code.

The vulnerability exists due to use-after-free in the error function in elfcomm.c when called from the process_archive function in readelf.c. A remote attacker can supply a specially crafted ELF file, trigger heap-based buffer overflow and cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


2) NULL pointer dereference (CVE-ID: CVE-2018-20651)

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

The vulnerability exists due to a NULL pointer dereference error in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd). A remote attacker can supply a specially crafted ELF file and perform a denial of service (DoS) attack.


3) Memory leak (CVE-ID: CVE-2018-20657)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the demangle_template function in cplus-dem.c in GNU libiberty. A remote attacker can trigger a memory leak via a crafted string and perform denial of service attack.

4) Heap-based buffer overflow (CVE-ID: CVE-2018-20671)

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

The vulnerability exists due to integer overflow in load_specific_debug_section in objdump.c. A remote attacker can supply a specially crafted section size, trigger heap-based buffer overflow and perform a denial of service (DoS) attack.


5) Integer overflow (CVE-ID: CVE-2018-20673)

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

The vulnerability exists due to integer overflow (for "Create an array for saving the template argument values") in the demangle_template function in cplus-dem.c in GNU libiberty. A remote attacker can supply a specially crafted ELF file, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References