Use of Uninitialized Variable in Apache HTTP Server - CVE-2020-1934

Vulnerability identifier: #VU26528

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-1934

CWE-ID: CWE-457

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the "mod_proxy_ftp" may use uninitialized memory when proxying to a malicious FTP server. A remote attacker can gain unauthorized access to sensitive information on the target system.

Apache HTTP Server
Arch Linux
Amazon Linux AMI
ClevOS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Opensuse
Ubuntu
openEuler
Fedora
jbcs-httpd24-mod_http2 (Red Hat package)
jbcs-httpd24-nghttp2 (Red Hat package)
apache2 (Alpine package)
httpd (Red Hat package)
jbcs-httpd24-httpd (Red Hat package)
apache2 (Debian package)
jbcs-httpd24-mod_security (Red Hat package)
jbcs-httpd24-curl (Red Hat package)
jbcs-httpd24-openssl-pkcs11 (Red Hat package)
jbcs-httpd24-mod_md (Red Hat package)
apache2-bin (Ubuntu package)
apache2 (Ubuntu package)
httpd-debugsource
httpd-devel
httpd-filesystem
httpd-debuginfo
httpd
httpd-help
mod_proxy_html
httpd-tools
mod_ldap
mod_md
mod_session
mod_ssl
libapache2-mod-proxy-uwsgi (Ubuntu package)
IBM API Connect
Dell Secure Connect Gateway
Oracle Communications Session Report Manager
Oracle Communications Element Manager
Oracle Communications Session Route Manager
Oracle Enterprise Manager Ops Center
Instantis EnterpriseTrack
Data Computing Appliance (DCA)
Maximo Application Suite - IoT Component

Install updates from vendor's website.

Apache HTTP Server - update to 2.4.42
jbcs-httpd24-mod_http2 (Red Hat package) - addressed in versions 1.15.7-3.jbcs.el6, 1.15.7-3.jbcs.el7
jbcs-httpd24-nghttp2 (Red Hat package) - addressed in versions 1.39.2-25.jbcs.el6, 1.39.2-25.jbcs.el7
apache2 (Alpine package) - update to 2.4.43-r0
httpd (Red Hat package) - update to 2.4.6-95.el7
jbcs-httpd24-httpd (Red Hat package) - addressed in versions 2.4.37-57.jbcs.el6, 2.4.37-57.jbcs.el7
apache2 (Debian package) - update to 2.4.38-3+deb10u4
jbcs-httpd24-mod_security (Red Hat package) - addressed in versions 2.9.2-51.GA.jbcs.el6, 2.9.2-51.GA.jbcs.el7
IBM API Connect - update to 5.0.8.12
Dell Secure Connect Gateway - update to 5.12.00.10
jbcs-httpd24-curl (Red Hat package) - addressed in versions 7.64.1-36.jbcs.el6, 7.64.1-36.jbcs.el7
jbcs-httpd24-openssl-pkcs11 (Red Hat package) - update to 0.4.10-7.jbcs.el7
jbcs-httpd24-mod_md (Red Hat package) - addressed in versions 2.0.8-24.jbcs.el6, 2.0.8-24.jbcs.el7
apache2-bin (Ubuntu package) - addressed in versions 2.4.18-2ubuntu3.17, 2.4.29-1ubuntu4.14, 2.4.41-4ubuntu3.12
apache2 (Ubuntu package) - addressed in versions 2.4.18-2ubuntu3.17, 2.4.29-1ubuntu4.14, 2.4.41-4ubuntu3.19
httpd-debugsource - update to 2.4.34-18
httpd-devel - update to 2.4.34-18
httpd-filesystem - update to 2.4.34-18
httpd-debuginfo - update to 2.4.34-18
httpd - update to 2.4.34-18
httpd-help - update to 2.4.34-18
mod_proxy_html - update to 2.4.34-18
httpd-tools - update to 2.4.34-18
mod_ldap - update to 2.4.34-18
mod_md - update to 2.4.34-18
mod_session - update to 2.4.34-18
mod_ssl - update to 2.4.34-18
libapache2-mod-proxy-uwsgi (Ubuntu package) - update to 2.4.41-4ubuntu3.1
httpd - addressed in versions 2.4.46-1.fc31, 2.4.46-1.fc32
Data Computing Appliance (DCA) - update to 4.3.0.0
Maximo Application Suite - IoT Component - addressed in versions 8.7.20, 8.8.16, 9.0.6

• https://httpd.apache.org/security/vulnerabilities_24.html

• Multiple vulnerabilities in Apache HTTP Server
• Arch Linux update for apache
• OpenSUSE Linux update for apache2
• Amazon Linux AMI update for httpd24
• Red Hat update for Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP3
• Multiple vulnerabilities in Oracle Communications Session Route Manager
• Multiple vulnerabilities in Oracle Communications Session Report Manager
• Multiple vulnerabilities in Oracle Communications Element Manager
• Multiple vulnerabilities in Instantis EnterpriseTrack
• Multiple vulnerabilities in Oracle Enterprise Manager Ops Center
• Use of Uninitialized Variable in apache2 (Alpine package)
• Debian update for apache2
• Red Hat Enterprise Linux 7 update for httpd
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Multiple vulnerabilities in DELL Secure Connect Gateway Security
• Multiple vulnerabilities in IBM API Connect
• ClevOS update for IBM Cloud Object Storage Systems
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• openEuler 20.03 LTS update for httpd
• Multiple vulnerabilities in IBM Maximo Application Suite - IoT Component
• Ubuntu update for apache2
• Fedora 32 update for httpd
• Fedora 31 update for httpd