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Atlassian Patches Servlet Filter Vulnerabilities Impacting A number of Merchandise

By Ionut Arghire on July 21, 2022

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Atlassian this week introduced patches for 2 crucial Servlet Filter vulnerabilities that influence a number of merchandise throughout its portfolio.

Servlet Filters are items of Java code designed to intercept and course of HTTP requests despatched between a shopper and a backend. Servlet Filters could supply safety mechanisms equivalent to auditing, authentication, logging, or authorization.

Tracked as CVE-2022-26136 and described as a Servlet Filter bypass, the primary of the issues may enable a distant, unauthenticated attacker to ship specifically crafted HTTP request and authenticate to third-party apps, or to launch a cross-site scripting (XSS) assault, to execute JavaScript code in a person’s browser.

The second vulnerability – CVE-2022-26137 – could end in extra Servlet Filters to be invoked through the processing of requests and responses, resulting in a cross-origin useful resource sharing (CORS) bypass. A distant, unauthenticated attacker could exploit the flaw to entry the weak software.

The problems, the corporate says, influence Bamboo Server and Information Middle, Bitbucket Server and Information Middle, Confluence Server and Information Middle, Crowd Server and Information Middle, Fisheye and Crucible, Jira Server and Information Middle, and Jira Service Administration Server and Information Middle.

Atlassian says it has launched patches for all the impacted merchandise and encourages customers to replace their installations as quickly as potential.

This week, the corporate additionally introduced software program updates that resolve a crucial vulnerability within the Questions for Confluence software working on Confluence Server or Information Middle.

Questions for Confluence is a data sharing software that helps Confluence customers discover data, share their data with others, and join with specialists to resolve particular points sooner.

On Wednesday, Atlassian warned that, when enabled on the Confluence Server and Information Middle, the applying creates a person account with hardcoded credentials. Tracked as CVE-2022-26138, the bug is taken into account “crucial severity.”

Having the username disabledsystemuser and a hardcoded password, the Confluence person account can be added to the confluence-users group, which means that it has entry to non-restricted pages inside Confluence.

“A distant, unauthenticated attacker with data of the hardcoded password may exploit this to log into Confluence and entry any pages the confluence-users group has entry to,” Atlassian warns.

The flaw impacts Questions for Confluence variations 2.7.34, 2.7.35, and three.0.2. Customers can confirm if their Confluence deployments are impacted by looking for the disabledsystemuser person or the related e mail deal with [email protected]

Atlassian additionally factors out that the person account shouldn’t be eliminated when uninstalling the Questions for Confluence functions and that it needs to be disabled or deleted manually.

The problem has been resolved with the discharge of Questions for Confluence variations 2.7.38 (suitable with Confluence 6.13.18 via 7.16.2) and three.0.5 (suitable with Confluence 7.16.three and later). Upgrading to those software iterations removes the disabledsystemuser person account if it has been created beforehand.

Atlassian says it has not obtained studies of this vulnerability being exploited in assaults.

Associated: Atlassian Patches Confluence Zero-Day as Exploitation Makes an attempt Surge

Associated: Atlassian Confluence Servers Hacked by way of Zero-Day Vulnerability

Associated: Atlassian Patches Vital Authentication Bypass Vulnerability in Jira

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