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TI-2017-11483 Aliases CVE-2017-15710GHSA-9q97-qm54-9797

Out-of-bounds write in Apache HTTP Server

Priority MEDIUM 50CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 16 fixed, 3 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

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

Why it matters now

EPSS 0.17534 97th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 16 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 Server2.0.23 to 2.0.65; 2.2.0 to 2.2.34; 2.4.0 to 2.4.29—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.0.23 to 2.0.65; 2.2.0 to 2.2.34; 2.4.0 to 2.4.29 Fixed in — No fix listed CNA

CPE configurations NVD · 36

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 26 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: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:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
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:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*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:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*7.6VulnerableRed 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: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:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • 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:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* 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:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat

Remediation

Red Hat 4 advisories

  • RHSA-2020:1121 Released 2020-03-31 · Red Hat rating Moderate
    httpd security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client Optional (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +5
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +5
    • Red Hat Enterprise Linux Server (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +3
    • Red Hat Enterprise Linux Server Optional (v. 7) mod_ldap-2.4.6-93.el7, mod_proxy_html-1:2.4.6-93.el7
    • Red Hat Enterprise Linux Workstation (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +3
    • Red Hat Enterprise Linux Workstation Optional (v. 7) mod_ldap-2.4.6-93.el7, mod_proxy_html-1:2.4.6-93.el7
  • 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-2018-01215 Improper authentication in Apache HTTP ServerPriority MEDIUM 58
  • 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-2018-01215 Improper authentication in Apache HTTP ServerPriority MEDIUM 58
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-2018-01215 Improper authentication in Apache HTTP ServerPriority MEDIUM 58
  • Advisory ·

    Apache HTTP Server — USN-3937-2

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2018-01215 Improper authentication in Apache HTTP ServerPriority MEDIUM 58
    • 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-2020:1121
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:1121
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:1121
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:1121
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:1121
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:1121
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-2017-15710
  2. 2026-10-03 Alias added: GHSA-9q97-qm54-9797

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