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TI-2018-14670 Aliases CVE-2018-20657GHSA-qhfg-hc2h-mmfc

The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU…

Priority MEDIUM 40CWE-772Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 fixed, 4 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-772.

Summary

The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1, has a memory leak via a crafted string, leading to a denial of service (memory consumption), as demonstrated by cxxfilt, a related issue to CVE-2018-12698.

Why it matters now

EPSS 0.04004 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 4 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:gnu:binutils:2.31.1:*:*:*:*:*:*:*2.31.1VulnerableGNU
cpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:*5.0.0 – 5.1.0VulnerableF5
cpe:2.3:a:f5:traffix_signaling_delivery_controller:4.4.0:*:*:*:*:*:*:*4.4.0VulnerableF5
  • cpe:2.3:a:gnu:binutils:2.31.1:*:*:*:*:*:*:* Versions 2.31.1 Vulnerable ·GNU
  • cpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:* Versions 5.0.0 – 5.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:traffix_signaling_delivery_controller:4.4.0:*:*:*:*:*:*:* Versions 4.4.0 Vulnerable ·F5

Remediation

Red Hat 1 advisory

  • RHSA-2019:3352 Released 2019-11-05 · Red Hat rating Low
    gdb security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) gdb-8.2-6.el8, gdb-doc-8.2-6.el8, gdb-gdbserver-8.2-6.el8 +1

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:3352

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20657
  2. 2026-10-03 Alias added: GHSA-qhfg-hc2h-mmfc

References

Exploit 1

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences