Web Application Security

In API Security

Slack GitHub Account Hacked via Stolen Employee API Token

January 5, 2023 3 Mins Read

On December 29, 2022, Slack was alerted to suspicious activity on their GitHub account. Upon investigation, the company discovered that a limited number of employee tokens had been stolen and misused to gain access to an externally hosted repository. The threat actor had also downloaded private code repositories on December 27, but neither Slack’s primary codebase nor any customer data were included in the downloaded repositories. Upon being notified of the incident, Slack immediately invalidated…

In API Security

New text2shell RCE vulnerability in Apache Common Texts CVE-2022-42889

October 17, 2022 2 Mins Read

Yet another RCE with a CVSS score of 9.8 out of 10 was disclosed a few hours ago. This issue looks like the same Log4shell and it seems even more dangerous since Common Texts are used more broadly. The Apache Foundation published a vulnerability in the Apache Commons Text project code and published a message to this effect in the project’s mailing list on October 13th, an official date of birth of Text4Shell vulnerability. This…

In API Security

Three new API exploits causes GitLab data privacy and availability issues

May 16, 2022 4 Mins Read

On May 10, 2022, and May 11, 2022, CVE-2022-1352 CVE-2021-1431, and CVE-2022-1545 were fixed and published on Gitlab-ORG public repository. There are no technical details or exploits yet, but according to the high-level description and titles, they gonna be critical Gitlab API vulnerabilities that affect data privacy and service availability. Two of these security issues were reported by the HackerOne bug bounty program, but reports are not disclosed to the public yet. We recommend checking…

In API Security

CVE-2022-1388: Critical security vulnerabilities in F5 Big-IP allows attackers to execute arbitrary code

May 6, 2022 2 Mins Read

On May 5, 2022, MITRE published CVE-2022-1388, an authentication bypass vulnerability in the BIG-IP modules affecting the iControl REST component. The vulnerability was assigned a CVSSv3 score of 9.8 The vulnerability was discovered internally by the F5 security team and there is no evidence of whether it’s exploited publicly. There is no publicly available proof of concept at the time of writing this blog post. Newly discovered BIG-IP vulnerability affects the following product and versions:…

In Web Application Security

What is fuzz testing? What is it used to test for?

January 17, 2022 7 Mins Read

Fuzz testing, regularly known as fuzzing, is a product testing procedure that incorporates embedding flawed or arbitrary information (FUZZ) into a product framework to recognize coding issues and security issues. Fuzz testing involves infusing information into a framework utilizing robotized or semi-computerized procedures and investigating the framework for different exemptions, for example, framework crashes or implicit code disappointment. Brief History Fuzz testing was created at the University of Wisconsin Madison in 1989 by Professor Barton…

In API Security

Log4j 0day mitigation update CVE-2021-44228

December 10, 2021 2 Mins Read

Wallarm has rolled out the update to detect and mitigate CVE-2021-44228. No additional actions are required from the customers Attempts at exploitation will be automatically blocked in a blocking mode When working in a monitoring mode, consider creating a virtual patch Log4Shell A 0-day exploit in the Java core library log4j was discovered that results in Remote Code Execution (RCE) by simple 1-line exploit with JNDI URL. Given how ubiquitous this library is, the impact…