USN-5090-4

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Source

https://ubuntu.com/security/notices/USN-5090-4

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5090-4.json

JSON Data

https://api.osv.dev/v1/vulns/USN-5090-4

Published

2021-09-28T15:05:47Z

Modified

2026-06-25T13:30:48.373726305Z

Summary

apache2 regression

Details

USN-5090-1 fixed vulnerabilities in Apache HTTP Server. One of the upstream fixes introduced a regression in UDS URIs. This update fixes the problem.

Original advisory details:

James Kettle discovered that the Apache HTTP Server HTTP/2 module incorrectly handled certain crafted methods. A remote attacker could possibly use this issue to perform request splitting or cache poisoning attacks. (CVE-2021-33193)

It was discovered that the Apache HTTP Server incorrectly handled certain malformed requests. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. (CVE-2021-34798)

Li Zhi Xin discovered that the Apache modproxyuwsgi module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. (CVE-2021-36160)

It was discovered that the Apache HTTP Server incorrectly handled escaping quotes. If the server was configured with third-party modules, a remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-39275)

It was discovered that the Apache mod_proxy module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to forward requests to arbitrary origin servers. (CVE-2021-40438)

References

Affected packages

Ubuntu:Pro:16.04:LTS / apache2

Package

Name: apache2
Purl: pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4.18-2ubuntu3.17+esm3

Affected versions

2.*

2.4.12-2ubuntu2

2.4.17-1ubuntu1

2.4.17-2ubuntu1

2.4.17-3ubuntu1

2.4.18-1ubuntu1

2.4.18-2ubuntu1

2.4.18-2ubuntu2

2.4.18-2ubuntu3

2.4.18-2ubuntu3.1

2.4.18-2ubuntu3.2

2.4.18-2ubuntu3.3

2.4.18-2ubuntu3.4

2.4.18-2ubuntu3.5

2.4.18-2ubuntu3.7

2.4.18-2ubuntu3.8

2.4.18-2ubuntu3.9

2.4.18-2ubuntu3.10

2.4.18-2ubuntu3.12

2.4.18-2ubuntu3.13

2.4.18-2ubuntu3.14

2.4.18-2ubuntu3.15

2.4.18-2ubuntu3.17

2.4.18-2ubuntu3.17+esm1

2.4.18-2ubuntu3.17+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.18-2ubuntu3.17+esm3"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5090-4.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": []
}