Vulnerability-Lookup

RHSA-2026:53537

Vulnerability from csaf_redhat - Published: 2026-08-11 14:30 - Updated: 2026-09-21 11:43

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: httpd: * httpd-2.4.68-6.hum1 (aarch64, x86_64) * httpd-core-2.4.68-6.hum1 (aarch64, x86_64) * httpd-devel-2.4.68-6.hum1 (aarch64, x86_64) * httpd-filesystem-2.4.68-6.hum1 (noarch) * httpd-manual-2.4.68-6.hum1 (noarch) * httpd-tools-2.4.68-6.hum1 (aarch64, x86_64) * mod_ldap-2.4.68-6.hum1 (aarch64, x86_64) * mod_lua-2.4.68-6.hum1 (aarch64, x86_64) * mod_proxy_html-2.4.68-6.hum1 (aarch64, x86_64) * mod_session-2.4.68-6.hum1 (aarch64, x86_64) * mod_ssl-2.4.68-6.hum1 (aarch64, x86_64) * httpd-2.4.68-6.hum1.src (src)

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-29168

A flaw was found in the mod_md module of httpd. When processing OCSP (Online Certificate Status Protocol) responses from a malicious or compromised OCSP responder, the module fails to enforce proper size limits on the incoming data. This issue leads to memory exhaustion and a denial of service.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Fixed 23 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:httpd-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-0:2.4.68-6.hum1@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-core-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-core-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-devel-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-devel-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-filesystem-0:2.4.68-6.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-filesystem-0:2.4.68-6.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-manual-0:2.4.68-6.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-manual-0:2.4.68-6.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-tools-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:httpd-tools-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_ldap-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_ldap-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_lua-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_lua-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_proxy_html-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_proxy_html-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_session-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_session-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_ssl-0:2.4.68-6.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:mod_ssl-0:2.4.68-6.hum1@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:53537	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-29168	external
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-29168	self
https://bugzilla.redhat.com/show_bug.cgi?id=2466753	external
https://www.cve.org/CVERecord?id=CVE-2026-29168	external
https://nvd.nist.gov/vuln/detail/CVE-2026-29168	external
https://httpd.apache.org/security/vulnerabilities…	external

JSON

To clipboard

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            "Red Hat Hardened Images:httpd-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:httpd-core-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:httpd-core-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:httpd-devel-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:httpd-devel-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:httpd-filesystem-0:2.4.68-6.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:httpd-filesystem-0:2.4.68-6.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:httpd-manual-0:2.4.68-6.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:httpd-manual-0:2.4.68-6.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:httpd-tools-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:httpd-tools-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:mod_ldap-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:mod_ldap-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:mod_lua-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:mod_lua-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:mod_proxy_html-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:mod_proxy_html-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:mod_session-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:mod_session-0:2.4.68-6.hum1@x86_64",
            "Red Hat Hardened Images:mod_ssl-0:2.4.68-6.hum1@aarch64",
            "Red Hat Hardened Images:mod_ssl-0:2.4.68-6.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "httpd: mod_md: unrestricted OCSP response leads to resource exhaustion"
    }
  ]
}

CVE-2026-29168 (GCVE-0-2026-29168)

Vulnerability from cvelistv5 – Published: 2026-05-05 13:10 – Updated: 2026-05-05 16:31

Title

Apache HTTP Server: mod_md unrestricted OCSP response

Summary

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP response data. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-05 15:34 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

apache mitre root

References

2 references

URL	Tags
https://httpd.apache.org/security/vulnerabilities…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/05/6

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache HTTP Server	Affected: 2.4.30 , ≤ 2.4.66 (semver) cpe:2.3:a:apache:http_server::::::::

Credits

Pavel Kohout, Aisle Research, Aisle.com

Show details on NVD website

JSON

To clipboard

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              "confidentialityImpact": "LOW",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

RHSA-2026:53537

CVE-2026-29168 (GCVE-0-2026-29168)

Tags

Sightings

Nomenclature

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