Security Bulletin: IBM DevOps Deploy / IBM UrbanCode Deploy (UCD) affected by an Uncontrolled Resource Consumption Vulnerability in Apache Tomcat (CVE-2026-68763)

Summary IBM DevOps Deploy / IBM UrbanCode Deploy UCD uses Apache Tomcat for its web interface and services. CVE-2026-68763. Vulnerability Details CVEID:CVE-2026-68763 DESCRIPTION: Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog trackin...

EXPLOIT-CVE-2021-44228

CVE-2021-44228 — Log4Shell PoC Lab DISCLAIMER This lab was created exclusively for educational and security research purposes. All traffic occurs within an isolated Docker network. Do not use this material on real systems or without explicit authorization. Misuse may be a crime. Use responsibly...

log4j-vul

log4j-vul This project is just to show Apache Log4j2 Vulnerability - aka CVE-2021-44228 Java: java version "1.8.0121" Compile: from src folder javac -classpath .;..\lib\log4j-api-2.1.jar;..\lib\log4j-core-2.1.jar com\example\Log4jVul.java Execute\Run: from src folder java -classpath...

CVE-2021-43297-POC

CVE-2021-43297 Vulnerability Description Apache Dubbo Hessian-Lite 3.2.11 and earlier versions contain a potential RCE attack risk. When Hessian-Lite encounters a serialization exception, it outputs related information, which may trigger the toString method of certain maliciously crafted Beans,...

Astra Linux – Vulnerability in Apache2

A out-of-bounds read vulnerability exists in the modmacro module of the Apache HTTP Server. This issue affects the Apache HTTP Server version up to 2.4.57...

Astra Linux – Vulnerability in Apache2

Improper null termination and out-of-bounds read vulnerabilities in the Apache HTTP Server. This issue affects the Apache HTTP Server version up to 2.4.66. Users are recommended to upgrade to version 2.4.67, as this fix addresses the vulnerability...

Astra Linux – Vulnerability in Apache2

An integer overflow occurs when attempting to renew an ACME certificate. After several attempts approximately 30 days under default configurations, the backoff timer becomes 0. Subsequent attempts to renew the certificate are repeated without delay until success is achieved. This issue affects th...

Astra Linux – Vulnerability in Apache2

An attacker who establishes an HTTP/2 connection with an initial window size of 0 was able to indefinitely block the handling of that connection in Apache HTTP Server. This could be used to exhaust server resources, similar to the well-known “slow loris” attack pattern. This issue has been fixed ...

Astra Linux – Vulnerability in Apache2

The “Use After Free” vulnerability in the Apache HTTP Server module modhttp2 occurs when file handles are already exhausted. This issue affects Apache HTTP Server versions 2.4.55 through 2.4.67...

Astra Linux – Vulnerability in Apache2

There is a vulnerability related to HTTP response splitting in several Apache HTTP Server modules, especially on untrusted or compromised backend servers. This issue affects Apache HTTP Server versions from 2.4.66 onwards. Users are recommended to upgrade to version 2.4.67, as this version...

Astra Linux – Vulnerability in Apache2

Apache HTTP Server versions 2.4.0 to 2.4.46: A specially crafted Digest nonce can cause a stack overflow in modauthdigest. There is no report of this overflow being exploitable, nor can the Apache HTTP Server team have created such a report. However, certain compilers and/or compilation options...

Astra Linux – Vulnerability in Apache2

The out-of-bounds write vulnerability in the modsed module of the Apache HTTP Server allows an attacker to overwrite heap memory with data provided by the attacker. This issue affects Apache HTTP Server version 2.4.2.52 and earlier versions...

Astra Linux – Vulnerability in Apache2

Improper neutralization of vulnerabilities related to escape, meta, or control sequences in the Apache HTTP Server, caused by unexpected overrides of variables calculated by the server for CGI programs, through environment variables set via Apache configuration. This issue affects the Apache HTTP...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability related to improper input validation in Apache Tomcat. Tomcat did not restrict HTTP/0.9 requests to only the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, users could bypass this constraint on GET requests by...

Astra Linux – Vulnerability in Tomcat9

Apache Tomcat has a Relative Path Traversal vulnerability. The fix for bug 60013 introduced a regression where the rewritten URL was normalized before it was decoded. This created the possibility that, for rewrite rules that modify query parameters into the URL, an attacker could manipulate the...

Astra Linux – Vulnerability in Tomcat9

DoS attack due to a vulnerability related to incomplete cleanup in Apache Tomcat. WebSocket clients were able to keep WebSocket connections open, leading to increased resource consumption. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18,...

Astra Linux – Vulnerability in Apache2

In some modssl configurations of the Apache HTTP Server, from versions up to 2.4.63, an HTTP desynchronization attack allows a man-in-the-middle attacker to hijack an HTTP session through a TLS upgrade. Only configurations that use “SSLEngine optional” to enable TLS upgrades are affected. Users a...

Astra Linux – Vulnerability in Apache2

Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded- headers to the origin server based on the client-side Connection header hop-by-hop mechanism. This could be used to bypass IP-based authentication on the origin server/application...

Astra Linux – Vulnerability in Apache2

An HTTP response smuggling vulnerability exists in the Apache HTTP Server via modproxyuwsgi. This issue affects the Apache HTTP Server: from version 2.4.30 through 2.4.55. Special characters in the origin response header can cause the response forwarded to the client to be truncated or split...

Astra Linux – Vulnerability in Apache2

If the Apache HTTP Server 2.4.53 is configured to perform transformations using modsed, especially in contexts where the input to modsed can be very large, modsed may cause excessive memory allocation and trigger an abort...