# RHSA-2023:0852: Security update for 11 packages

RHSA-2023:0852, released February 21, 2023, fixes 3 CVEs across 11 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2023-0852
- Platform: Linux
- Released: Feb 21, 2023
- Priority: High (Closes CVE-2022-37436, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2023:0852

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [httpd](https://patchblox.com/security/data/product/linux/httpd.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [httpd-devel](https://patchblox.com/security/data/product/linux/httpd-devel.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [httpd-filesystem](https://patchblox.com/security/data/product/linux/httpd-filesystem.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [httpd-manual](https://patchblox.com/security/data/product/linux/httpd-manual.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [httpd-tools](https://patchblox.com/security/data/product/linux/httpd-tools.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [mod_http2](https://patchblox.com/security/data/product/linux/mod-http2.md) | RHEL 8 | 0:1.15.7-5.module+el8.6.0+13996+01710940 |
| [mod_ldap](https://patchblox.com/security/data/product/linux/mod-ldap.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [mod_md](https://patchblox.com/security/data/product/linux/mod-md.md) | RHEL 8 | 1:2.0.8-8.module+el8.3.0+6814+67d1e611 |
| [mod_proxy_html](https://patchblox.com/security/data/product/linux/mod-proxy-html.md) | RHEL 8 | 1:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [mod_session](https://patchblox.com/security/data/product/linux/mod-session.md) | RHEL 8 | 0:2.4.37-51.module+el8.7.0+18026+7b169787.1 |
| [mod_ssl](https://patchblox.com/security/data/product/linux/mod-ssl.md) | RHEL 8 | 1:2.4.37-51.module+el8.7.0+18026+7b169787.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-37436](https://patchblox.com/security/data/cve/CVE-2022-37436.md) | High | apache2: Prior to Apache HTTP Server 2.4.55, a malicious backend can cause theresponse headers to be truncated early, resultin... | 7.5 | 0.5272 |  |
| [CVE-2006-20001](https://patchblox.com/security/data/cve/CVE-2006-20001.md) | High | apache2: A carefully crafted If: request header can cause a memory read, or write ofa single zero byte, in a pool (heap) memor... | 7.5 | 0.0358 |  |
| [CVE-2022-36760](https://patchblox.com/security/data/cve/CVE-2022-36760.md) | High | apache2: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP... | 9.0 | 0.0193 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo