RHSA-2021:4537
Vulnerability from csaf_opensuse - Published: 2021-11-09 00:00 - Updated: 2026-09-20 11:18Summary
security update for httpd
Severity
Important
Notes
Title of the patch: security update for httpd
Description of the patch: This security update provides a functional equivalent of RHSA-2021:4537.
The original Red Hat(R) advisory is available from the Red Hat web site at
https://access.redhat.com/errata/RHSA-2021:4537.
Patchnames: RHSA-2021:4537
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
9.8 (Critical)
Affected products
Recommended
11 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Liberty Linux 8:httpd-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:httpd-devel-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:httpd-filesystem-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:httpd-manual-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:httpd-tools-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_http2-0:1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_ldap-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_md-1:2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_proxy_html-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_session-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 8:mod_ssl-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4 | — |
Vendor Fix
|
Threats
Impact
critical
References
4 references
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"vulnerabilities": [
{
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"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-20325"
}
],
"notes": [
{
"category": "general",
"text": "Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a security regression compared to the versions shipped in Red Hat Enterprise Linux 8.4. A user who installs or updates to Red Hat Enterprise Linux 8.5.0 would be vulnerable to the mentioned CVEs, even if they were properly fixed in Red Hat Enterprise Linux 8.4. CVE-2021-20325 was assigned to that Red Hat specific security regression and it does not affect the upstream versions of httpd.",
"title": "CVE description"
}
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"SUSE Liberty Linux 8:mod_http2-0:1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ldap-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_md-1:2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_proxy_html-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_session-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ssl-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-20325",
"url": "https://www.suse.com/security/cve/CVE-2021-20325"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:httpd-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:httpd-devel-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:httpd-filesystem-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4",
"SUSE Liberty Linux 8:httpd-manual-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4",
"SUSE Liberty Linux 8:httpd-tools-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_http2-0:1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ldap-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_md-1:2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_proxy_html-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_session-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ssl-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:httpd-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:httpd-devel-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:httpd-filesystem-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4",
"SUSE Liberty Linux 8:httpd-manual-0:2.4.37-43.module+el8.5.0+13064+c4b14997.noarch::httpd:2.4",
"SUSE Liberty Linux 8:httpd-tools-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_http2-0:1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ldap-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_md-1:2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_proxy_html-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_session-0:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4",
"SUSE Liberty Linux 8:mod_ssl-1:2.4.37-43.module+el8.5.0+13064+c4b14997.x86_64::httpd:2.4"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-11-09T00:00:00Z",
"details": "critical"
}
],
"title": "CVE-2021-20325"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- 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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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