A Flaw in Apache HTTP Server Allows any Users to Gain Root Access

Apache HTTP server security update fixes multiple security vulnerabilities including the privilege escalation vulnerability that allows users to run PHP, CGI script to gain the root access.

Apache Privilege Escalation

The vulnerability affects all the releases between 2.4.17 to 2.4.38, and it can be tracked as CVE-2019-0211. A low privileged user could execute arbitrary code with the privileges of the root process by manipulating the scoreboard.

It affects Unix systems and the non-Unix systems are not affected, reads Apache security advisory.

mod_auth_digest access

The vulnerability affects Apache HTTP Server between 2.4 to 2.4.38, a race condition in mod_auth_digest allows any user with valid credentials can authenticate using another username. The vulnerability can be tracked as CVE-2019-0217.

mod_ssl access control bypass

A bug in mod_ssl allows a client with TLS 1.3 supporting Post-Handshake Authentication to bypass configured access control restrictions. The bug affects the releases 2.4.37 and 2.4.38 and the vulnerability can be tracked as CVE-2019-0215.

mod_http2, possible crash & read-after-free

The server’s with H2Upgrade enabled for h2 are affected, if they receive the request from http/1.1 to http/2, may lead to misconfiguration and crash. Sever that never enabled h2 protocol are unaffected.

“http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly”, the vulnerability can be tracked as CVE-2019-0197/CVE-2019-0196.

Httpd URL normalization

If the path URL contains multiple slashes such as LocationMatch and RewriteRule in regular expressions may cause the server to collapse.

The vulnerability affects the versions between 2.4.0 to 2.4.38 and it can be tracked as CVE-2019-0220.

Related Read

Debian Security Update – Fix for Vulnerabilities that Leads to DOS and Arbitrary Code Execution

Apple Released Security Updates for iOS, Safari, tvOS, iTunes & Fixed Several Vulnerabilities

Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Versa Concerto 0-Day Flaw Enables Remote Code Execution by Bypassing Authentication

Security researchers have uncovered multiple critical vulnerabilities in Versa Concerto, a widely deployed network security…

3 hours ago

Hackers Targets Coinbase Users Targeted in Advanced Social Engineering Hack

Coinbase users have become the prime targets of an intricate social engineering campaign since early…

4 hours ago

Hackers Exploit PyBitmessage Library to Evade Antivirus and Network Security Detection

The AhnLab Security Intelligence Center (ASEC) has uncovered a new strain of backdoor malware being…

4 hours ago

Several GitLab Vulnerabilities Enable Attackers to Launch DoS Attacks

GitLab has issued critical security patches addressing 11 vulnerabilities across its Community Edition (CE) and…

4 hours ago

Cisco Identity Services RADIUS Vulnerability Allows Attackers to Trigger Denial of Service Condition

Cisco has disclosed a significant security vulnerability in its Identity Services Engine (ISE) that could…

4 hours ago

Grafana Zero-Day Vulnerability Allows Attackers to Redirect Users to Malicious Sites

The High-severity cross-site scripting (XSS) vulnerability has been discovered in Grafana, prompting the immediate release…

4 hours ago