CVE-2018-20657

Name: CVE-2018-20657
Creator: NVD / NIST
Published: 2019-01-02T14:29:00.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.00%

Last modified Jun 17, 2026

CVE-2018-20657 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.00% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

4.00%

89.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-772

Affected Software

Vendor	Product	Versions
Gnu	Binutils	2.31.1
F5	Traffix Signaling Delivery Controller	>= 5.0.0, <= 5.1.0
F5	Traffix Signaling Delivery Controller	4.4.0

References

http://www.securityfocus.com/bid/106444Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:3352
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88539Exploit, Issue Tracking, Third Party Advisory
https://support.f5.com/csp/article/K62602089Third Party Advisory
http://www.securityfocus.com/bid/106444Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:3352
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88539Exploit, Issue Tracking, Third Party Advisory
https://support.f5.com/csp/article/K62602089Third Party Advisory

Timeline

Published: Jan 2, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20657?

How severe is CVE-2018-20657?

Severity scoring for CVE-2018-20657 is pending analysis. The EPSS model estimates a 4.00% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20657?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20657?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST