CVE-2018-20671: gnu binutils Integer Overflow or Wraparound

Vulnerability summary

CVE-2018-20671 is a medium (CVSS 5.5) Integer Overflow or Wraparound vulnerability in gnu binutils. EPSS estimates a 1.97% chance of exploitation in the next 30 days, higher than 80.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 04-01-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

load_specific_debug_section in objdump.c in GNU Binutils through 2.31.1 contains an integer overflow vulnerability that can trigger a heap-based buffer overflow via a crafted section size.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.