CVE-2021-20325
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.59% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 75.2% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2022-02-18 17:50Z4 YR AGO
- Last updated
- 2024-08-03 17:37Z2 YR AGO
- Reserved
- 2020-12-17
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 80b3ce090805fa7b1ac71403a57a4829a67c4a3fb9f2f0a06faf6804ecf49c82
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2017321
07 Fixed in
AlmaLinux 8
- httpd Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-devel Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-filesystem Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-manual Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-tools Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_http2 Fixed in 1.15.7-3.module_el8.5.0+2609+b30d9eec
- mod_ldap Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_md Fixed
A version is affected if any line below covers it.
- Affected before 1:2.0.8-8.module_el8.5.0+2609+b30d9eec
- Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- mod_proxy_html Fixed in 1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_session Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_ssl Fixed in 1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- httpd Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-devel Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-filesystem Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-manual Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- httpd-tools Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_http2 Fixed in 1.15.7-3.module_el8.5.0+2609+b30d9eec
- mod_ldap Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_md Fixed
A version is affected if any line below covers it.
- Affected before 1:2.0.8-8.module_el8.5.0+2609+b30d9eec
- Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- mod_proxy_html Fixed in 1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_session Fixed in 2.4.37-43.module_el8.5.0+2597+c4b14997.alma
- mod_ssl Fixed in 1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.