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Fencer Vulns
medium 5.5

CVE-2018-6759 json

The bfd_get_debug_link_info_1 function in opncls.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils…

published 2018-02-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18506

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The bfd_get_debug_link_info_1 function in opncls.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, has an unchecked strnlen operation. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) via a crafted ELF file.

Patch / fix

  • binutils Debian 14, Debian 13, Debian 12 2.30-3

debian advisories DEBIAN-CVE-2018-6759

  • binutils Ubuntu Pro 16.04 LTS 2.26.1-1ubuntu1~16.04.8+esm1

ubuntu advisories UBUNTU-CVE-2018-6759

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • binutils SLE Module for Package Hub 15, SLE Module for Development Tools 15, SLE Module for Basesystem 15 2.32-6.8.1
  • binutils SLE Module for Package Hub 15 SP1, SLE Module for Development Tools 15 SP1, SLE Module for Basesystem 15 SP1 2.32-7.5.1
  • binutils SLES 12 SP3, SLES 12 SP2-BCL, SLED 12 SP3 +9 more 2.31-9.26.1
  • cross-ppc-binutils SLE Software Development Kit 12 SP3 2.31-9.26.1
  • cross-spu-binutils SLE Software Development Kit 12 SP3 2.31-9.26.1
  • binutils SLE Module for Development Tools 15, SLE Module for Basesystem 15 2.31-6.3.1

suse advisories SUSE-SU-2019:2780-1SUSE-SU-2019:2779-1SUSE-SU-2018:3207-2SUSE-SU-2018:3207-1SUSE-SU-2018:3170-1

  • binutils openSUSE Tumbleweed 2.37-1.3
  • binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-rx-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-arm-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-avr-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-ppc-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-spu-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1
  • cross-hppa-binutils openSUSE Leap 15.1 2.32-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:10651-1openSUSE-SU-2019:2432-1openSUSE-SU-2019:2415-1

  • binutils Alpine 3.7 2.30-r2
  • binutils Alpine 3.8 2.30-r6

alpine advisories ALPINE-CVE-2018-6759

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-6759 updated cvss 5.5

binutils: Unchecked strnlen in opncls.c:bfd_get_debug_link_info_1() can allow lead to denial of service

  • Red Hat Enterprise Linux 5 binutils, binutils220 Red Hat Enterprise Linux 6 binutils
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 binutils
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 binutils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.09% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.