critical
9.8
CWE
787 119 400
Advisory Published
Updated

CVE-2021-44790: Possible buffer overflow when parsing multipart content in mod_lua of Apache HTTP Server 2.4.51 and earlier

First published: Mon Dec 20 2021(Updated: )

apache. Multiple issues were addressed by updating apache to version 2.4.53.

Credit: CVE-2021-44224 CVE-2021-44790 CVE-2022-22719 CVE-2022-22720 CVE-2022-22721 CVE-2021-44224 CVE-2021-44790 CVE-2022-22719 CVE-2022-22720 CVE-2022-22721 CVE-2021-44224 CVE-2021-44790 CVE-2022-22719 CVE-2022-22720 CVE-2022-22721 security@apache.org

Affected SoftwareAffected VersionHow to fix
Apple Catalina
Apple macOS Big Sur<11.6.6
11.6.6
<12.4
12.4
Apache HTTP server<=2.4.51
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Tenable Tenable.sc>=5.16.0<5.20.0
Netapp Cloud Backup
Oracle Communications Element Manager<=9.0
Oracle Communications Operations Monitor=4.3
Oracle Communications Operations Monitor=4.4
Oracle Communications Operations Monitor=5.0
Oracle Communications Session Report Manager<=9.0
Oracle Communications Session Route Manager<=9.0
Oracle HTTP Server=12.2.1.3.0
Oracle HTTP Server=12.2.1.4.0
Oracle Instantis Enterprisetrack=17.1
Oracle Instantis Enterprisetrack=17.2
Oracle Instantis Enterprisetrack=17.3
Oracle ZFS Storage Appliance Kit=8.8
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-security_update_2021-004
Apple Mac OS X=10.15.7-security_update_2021-005
Apple Mac OS X=10.15.7-security_update_2021-006
Apple Mac OS X=10.15.7-security_update_2021-007
Apple Mac OS X=10.15.7-security_update_2021-008
Apple Mac OS X=10.15.7-security_update_2022-001
Apple Mac OS X=10.15.7-security_update_2022-002
Apple Mac OS X=10.15.7-security_update_2022-003
Apple macOS<10.15.7
Apple macOS>=11.0<11.6.6
Apple macOS>=12.0<12.4
redhat/httpd<2.4.52
2.4.52
redhat/httpd<0:2.4.6-97.el7_9.4
0:2.4.6-97.el7_9.4
redhat/httpd<0:2.4.6-45.el7_3.8
0:2.4.6-45.el7_3.8
redhat/httpd<0:2.4.6-67.el7_4.9
0:2.4.6-67.el7_4.9
redhat/httpd<0:2.4.6-89.el7_6.4
0:2.4.6-89.el7_6.4
redhat/httpd<0:2.4.6-90.el7_7.3
0:2.4.6-90.el7_7.3
redhat/httpd24-httpd<0:2.4.34-23.el7.1
0:2.4.34-23.el7.1
debian/apache2
2.4.38-3+deb10u8
2.4.38-3+deb10u10
2.4.56-1~deb11u2
2.4.56-1~deb11u1
2.4.57-2
2.4.57-3
2.4.58-1

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

Remedy

https://www.oracle.com/security-alerts/cpujan2022.html

Remedy

Disabling mod_lua and restarting httpd will mitigate this flaw. See https://access.redhat.com/articles/10649 for more information.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-44790?

    CVE-2021-44790 is a vulnerability in Apache HTTP Server that allows a carefully crafted request body to cause a buffer overflow in the mod_lua multipart parser.

  • What software is affected by CVE-2021-44790?

    Apache HTTP Server 2.4.51 and earlier versions are affected by CVE-2021-44790.

  • How severe is CVE-2021-44790?

    CVE-2021-44790 has a severity level of critical.

  • How can I fix CVE-2021-44790?

    To fix CVE-2021-44790, update Apache HTTP Server to version 2.4.53 or later.

  • Is there an exploit for CVE-2021-44790?

    The Apache httpd team is not aware of an exploit for CVE-2021-44790, but it might be possible to craft one.

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