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TI-2018-01215 Aliases CVE-2018-1312GHSA-hvff-4fq3-p325

Improper authentication in Apache HTTP Server

Priority MEDIUM 58CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 18 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-287.

Summary

In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.

Why it matters now

EPSS 0.15785 96th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 18 fixed, 3 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache HTTP Server2.0.42 to 2.4.29—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.0.42 to 2.4.29 Fixed in — No fix listed CNA

CPE configurations NVD · 39

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:*2.4.1VulnerableApache
cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:*2.4.2VulnerableApache
cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:*2.4.3VulnerableApache
cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:*2.4.4VulnerableApache
cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:*2.4.6VulnerableApache
cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:*2.4.7VulnerableApache
cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:*2.4.9VulnerableApache
cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:*2.4.10VulnerableApache
cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:*2.4.12VulnerableApache
cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:*2.4.16VulnerableApache
  • cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:* Versions 2.4.3 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:* Versions 2.4.4 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:* Versions 2.4.6 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:* Versions 2.4.7 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:* Versions 2.4.9 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:* Versions 2.4.10 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:* Versions 2.4.12 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:* Versions 2.4.16 Vulnerable ·Apache
Show 29 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*2.4.17VulnerableApache
cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*2.4.18VulnerableApache
cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*2.4.20VulnerableApache
cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:*2.4.23VulnerableApache
cpe:2.3:a:apache:http_server:2.4.25:*:*:*:*:*:*:*2.4.25VulnerableApache
cpe:2.3:a:apache:http_server:2.4.26:*:*:*:*:*:*:*2.4.26VulnerableApache
cpe:2.3:a:apache:http_server:2.4.27:*:*:*:*:*:*:*2.4.27VulnerableApache
cpe:2.3:a:apache:http_server:2.4.28:*:*:*:*:*:*:*2.4.28VulnerableApache
cpe:2.3:a:apache:http_server:2.4.29:*:*:*:*:*:*:*2.4.29VulnerableApache
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
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:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:redhat:jboss_core_services:1.0:*:*:*:*:*:*:*1.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0Running onRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
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_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:* Versions 2.4.17 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:* Versions 2.4.18 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:* Versions 2.4.20 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:* Versions 2.4.23 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.25:*:*:*:*:*:*:* Versions 2.4.25 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.26:*:*:*:*:*:*:* Versions 2.4.26 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.27:*:*:*:*:*:*:* Versions 2.4.27 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.28:*:*:*:*:*:*:* Versions 2.4.28 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.29:*:*:*:*:*:*:* Versions 2.4.29 Vulnerable ·Apache
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • 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:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:redhat:jboss_core_services:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Running on ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • 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_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 4 advisories

  • RHSA-2019:1898 Released 2019-07-29 · Red Hat rating Low
    httpd security update
    • Red Hat Enterprise Linux Client Optional (v. 7) httpd-2.4.6-89.el7_6.1, httpd-devel-2.4.6-89.el7_6.1, httpd-manual-2.4.6-89.el7_6.1 +5
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) httpd-2.4.6-89.el7_6.1, httpd-devel-2.4.6-89.el7_6.1, httpd-manual-2.4.6-89.el7_6.1 +5
    • Red Hat Enterprise Linux Server (v. 7) httpd-2.4.6-89.el7_6.1, httpd-devel-2.4.6-89.el7_6.1, httpd-manual-2.4.6-89.el7_6.1 +3
    • Red Hat Enterprise Linux Server Optional (v. 7) mod_ldap-2.4.6-89.el7_6.1, mod_proxy_html-1:2.4.6-89.el7_6.1
    • Red Hat Enterprise Linux Workstation (v. 7) httpd-2.4.6-89.el7_6.1, httpd-devel-2.4.6-89.el7_6.1, httpd-manual-2.4.6-89.el7_6.1 +3
    • Red Hat Enterprise Linux Workstation Optional (v. 7) mod_ldap-2.4.6-89.el7_6.1, mod_proxy_html-1:2.4.6-89.el7_6.1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) httpd-2.4.6-89.el7_6.1, httpd-devel-2.4.6-89.el7_6.1, httpd-manual-2.4.6-89.el7_6.1 +3
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) mod_ldap-2.4.6-89.el7_6.1, mod_proxy_html-1:2.4.6-89.el7_6.1
  • RHSA-2019:0367 Released 2019-02-18 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.29 security update
    • Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-1-6.jbcs.el6, jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-3.redhat_2.jbcs.el6, jbcs-httpd24-apr-1.6.3-31.jbcs.el6 +31
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-1-6.jbcs.el7, jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-3.redhat_2.jbcs.el7, jbcs-httpd24-apr-1.6.3-31.jbcs.el7 +31
  • RHSA-2019:0366 Released 2019-02-18 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP1 security update
    • Red Hat JBoss Core Services
Show 1 more Red Hat advisories
  • RHSA-2018:3558 Released 2018-11-13 · Red Hat rating Moderate
    httpd24 security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) httpd24-curl-7.61.1-1.el6, httpd24-httpd-2.4.34-7.el6, httpd24-httpd-devel-2.4.34-7.el6 +11
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) httpd24-curl-7.61.1-1.el7, httpd24-httpd-2.4.34-7.el7, httpd24-httpd-devel-2.4.34-7.el7 +12
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) httpd24-curl-7.61.1-1.el7, httpd24-httpd-2.4.34-7.el7, httpd24-httpd-devel-2.4.34-7.el7 +12
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) httpd24-curl-7.61.1-1.el7, httpd24-httpd-2.4.34-7.el7, httpd24-httpd-devel-2.4.34-7.el7 +12
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) httpd24-curl-7.61.1-1.el7, httpd24-httpd-2.4.34-7.el7, httpd24-httpd-devel-2.4.34-7.el7 +12
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) httpd24-curl-7.61.1-1.el6, httpd24-httpd-2.4.34-7.el6, httpd24-httpd-devel-2.4.34-7.el6 +11
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) httpd24-curl-7.61.1-1.el7, httpd24-httpd-2.4.34-7.el7, httpd24-httpd-devel-2.4.34-7.el7 +12

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Apache HTTP Server — USN-3627-1

    6 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2017-11487 Improper input validation in Apache HTTP ServerPriority HIGH 77
    • TI-2018-01206 Out-of-bounds read in Apache HTTP ServerPriority HIGH 70
    • TI-2017-11483 Out-of-bounds write in Apache HTTP ServerPriority MEDIUM 50
  • Advisory ·

    Apache HTTP Server — USN-3627-2

    6 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2017-11487 Improper input validation in Apache HTTP ServerPriority HIGH 77
    • TI-2018-01206 Out-of-bounds read in Apache HTTP ServerPriority HIGH 70
    • TI-2017-11483 Out-of-bounds write in Apache HTTP ServerPriority MEDIUM 50
Show 2 more groups
  • Advisory ·

    Apache HTTP Server — DSA-4164

    6 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2017-11487 Improper input validation in Apache HTTP ServerPriority HIGH 77
    • TI-2018-01206 Out-of-bounds read in Apache HTTP ServerPriority HIGH 70
    • TI-2017-11483 Out-of-bounds write in Apache HTTP ServerPriority MEDIUM 50
  • Advisory ·

    Apache HTTP Server — USN-3937-2

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2017-11483 Out-of-bounds write in Apache HTTP ServerPriority MEDIUM 50
    • TI-2018-01204 Memory corruption in Apache HTTP ServerPriority MEDIUM 42

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 JBoss Enterprise Web Server 2AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:1898
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:1898
Red Hat JBoss Core ServicesFixed RHSA-2019:0366
Red Hat JBoss Core Services on RHEL 6 ServerFixed RHSA-2019:0367
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2019:0367
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:3558
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3558
Not affected: 3 products
  • Red Hat Enterprise Linux 8
  • Red Hat JBoss Web Server 3
  • Red Hat Mobile Application Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1312
  2. 2026-10-03 Alias added: GHSA-hvff-4fq3-p325

References

Other 13

  • TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
See all 349 →

Sources