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TI-2018-13553 Aliases CVE-2018-19115GHSA-q8cg-hf8f-hgf3

keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes…

Priority MEDIUM 48CWE-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: 5 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

keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impact, because extract_status_code in lib/html.c has no validation of the status code and instead writes an unlimited amount of data to the heap.

Why it matters now

EPSS 0.03746 89th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 5 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 · 7

CPEVersionsRoleVendor
cpe:2.3:a:keepalived:keepalived:*:*:*:*:*:*:*:*before 2.0.7VulnerableKeepalived
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:keepalived:keepalived:*:*:*:*:*:*:*:* Versions before 2.0.7 Vulnerable ·Keepalived
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2019:1945 Released 2019-07-30 · Red Hat rating Important
    keepalived security update
    • Red Hat Enterprise Linux Server EUS (v. 7.4) keepalived-1.3.5-1.el7_4.1
  • RHSA-2019:1792 Released 2019-07-16 · Red Hat rating Important
    keepalived security update
    • Red Hat Enterprise Linux Server EUS (v. 7.5) keepalived-1.3.5-7.el7_5.2
  • RHSA-2019:0022 Released 2019-01-03 · Red Hat rating Important
    keepalived security update
    • Red Hat Enterprise Linux Server (v. 7) keepalived-1.3.5-8.el7_6
    • Red Hat Enterprise Linux Workstation (v. 7) keepalived-1.3.5-8.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) keepalived-1.3.5-8.el7_6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:0022
Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:1945
Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:1792
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:0022
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:0022
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-19115
  2. 2026-10-03 Alias added: GHSA-q8cg-hf8f-hgf3

References

Patch 2

Advisory 8

Sources

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