CVE-2018-20657

mediumpriority · track · 31EPSS 0.040 · 90 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.00% (90th) EPSS

CVSS 5 · medium

Is it mine?

26 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedgdb-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-0:8.2-6.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debuginfo-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debuginfo-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debuginfo-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debuginfo-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debugsource-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debugsource-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debugsource-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-debugsource-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-doc-0:8.2-6.el8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-gdbserver-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-gdbserver-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-gdbserver-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-gdbserver-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-headless-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-headless-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-headless-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352
Fixedgdb-headless-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:3352

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.3–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.03.3lowCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Lsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-772USprimaryCWE-400US

affected products (26)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
f5 traffix signaling delivery controller= 4.4.0nvdUScpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:*
f5 traffix signaling delivery controller5.0.0 → 5.1.0nvdUScpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:*
gnu binutils= 2.31.1nvdUScpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*
gdb-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-0:8.2-6.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debuginfo-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debuginfo-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debuginfo-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debuginfo-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debugsource-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debugsource-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debugsource-0:8.2-6.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-debugsource-0:8.2-6.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-doc-0:8.2-6.el8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-gdbserver-0:8.2-6.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
gdb-gdbserver-0:8.2-6.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS

showing 20 of 26

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2019:3352Red Hat Security Advisory: gdb security, bug fix, and enhancement update2019-11-05csaf · redhat_csafUS
An update for gdb is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2019-01-02modified 2026-06-17

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+1024 more

references (19)

External citations — patches, advisories, analysis.

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