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TI-2018-04972 Aliases CVE-2018-6797GHSA-8qqx-9gj6-xx9p

An issue was discovered in Perl 5.18 through 5.26.

Priority MEDIUM 51CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 7 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

Why it matters now

EPSS 0.06477 93rd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 7 fixed, 1 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 · 12

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*5.18 – 5.26VulnerablePerl
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:* Versions 5.18 – 5.26 Vulnerable ·Perl
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2018:1192 Released 2018-04-23 · Red Hat rating Moderate
    rh-perl524-perl security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-perl524-perl-4:5.24.0-380.el6, rh-perl524-perl-Attribute-Handlers-0.99-380.el6, rh-perl524-perl-Devel-Peek-1.23-380.el6 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-perl524-perl-4:5.24.0-380.el7, rh-perl524-perl-Attribute-Handlers-0.99-380.el7, rh-perl524-perl-Devel-Peek-1.23-380.el7 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-perl524-perl-4:5.24.0-380.el6, rh-perl524-perl-Attribute-Handlers-0.99-380.el6, rh-perl524-perl-Devel-Peek-1.23-380.el6 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-perl524-perl-4:5.24.0-380.el7, rh-perl524-perl-Attribute-Handlers-0.99-380.el7, rh-perl524-perl-Devel-Peek-1.23-380.el7 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-perl524-perl-4:5.24.0-380.el7, rh-perl524-perl-Attribute-Handlers-0.99-380.el7, rh-perl524-perl-Devel-Peek-1.23-380.el7 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-perl524-perl-4:5.24.0-380.el6, rh-perl524-perl-Attribute-Handlers-0.99-380.el6, rh-perl524-perl-Devel-Peek-1.23-380.el6 +26
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-perl524-perl-4:5.24.0-380.el7, rh-perl524-perl-Attribute-Handlers-0.99-380.el7, rh-perl524-perl-Devel-Peek-1.23-380.el7 +26

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:1192
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:1192
Not affected: 5 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-6797
  2. 2026-10-03 Alias added: GHSA-8qqx-9gj6-xx9p

References

Patch 1

Advisory 4

Other 1

Sources

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