CVE-2018-18520: canonical ubuntu_linux

Vulnerability summary

CVE-2018-18520 is a medium (CVSS 6.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.79% chance of exploitation in the next 30 days, higher than 86.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 19-10-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.