#VU50123 Out-of-bounds write in Binutils - CVE-2020-35448

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Main Vulnerability Database Vulnerabilities #VU50123

#VU50123 Out-of-bounds write in Binutils - CVE-2020-35448

Published: December 27, 2020 / Updated: January 28, 2021


Vulnerability identifier: #VU50123
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-35448
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Binutils
Software vendor:
GNU

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.


Remediation

Install update from vendor's website.

External links