Atlassian Drops Patches for Critical Jira Authentication Bypass Vulnerability

Apr 23, 2022

Atlassian has published a security advisory warning of a
critical vulnerability in its Jira software that could be abused by
a remote, unauthenticated attacker to circumvent authentication
protections.

Tracked as CVE-2022-0540^[1], the flaw is rated 9.9
out of 10 on the CVSS scoring system and resides in Jira’s
authentication framework, Jira Seraph. Khoadha of Viettel Cyber
Security has been credited with discovering and reporting the
security weakness.

“A remote, unauthenticated attacker could exploit this by
sending a specially crafted HTTP request to bypass authentication
and authorization requirements in WebWork actions using an affected
configuration,” Atlassian noted ^[2].

The flaw affects the following Jira products –

Jira Core Server, Jira Software Server and Jira Software Data
Center: All versions before 8.13.18, 8.14.x, 8.15.x, 8.16.x,
8.17.x, 8.18.x, 8.19.x, 8.20.x before 8.20.6, and 8.21.x
Jira Service Management Server and Jira Service Management Data
Center: All versions before 4.13.18, 4.14.x, 4.15.x, 4.16.x,
4.17.x, 4.18.x, 4.19.x, 4.20.x before 4.20.6, and 4.21.x

Fixed Jira and Jira Service Management versions are 8.13.18,
8.20.6, and 8.22.0 and 4.13.18, 4.20.6, and 4.22.0.

Atlassian also noted that the flaw affects first and third-party
apps only if they are installed in one of the aforementioned Jira
or Jira Service Management versions and that they are using a
vulnerable configuration.

Users are strongly recommended to update to one of the patched
versions to mitigate potential exploitation attempts. If immediate
patching isn’t an option, the company is advising updating the
affected apps to a fixed version or disabling them altogether.

It’s worth noting that a critical remote code execution flaw in
Atlassian Confluence (CVE-2021-26084 ^[3], CVSS score: 9.8) was
actively weaponized in the wild last year to install ^[4]
cryptocurrency miners ^[5]
on compromised servers.

References

^{^}
CVE-2022-0540
(nvd.nist.gov)
^{^}
noted
(confluence.atlassian.com)
^{^}
CVE-2021-26084
(thehackernews.com)
^{^}
install
(thehackernews.com)
^{^}
cryptocurrency miners
(thehackernews.com)

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OWASP TOP !0

Injection. Injection flaws, such as SQL, NoSQL, OS, and LDAP injection, occur when untrusted data is sent to an interpreter as part of a command or query. The attacker’s hostile data can trick the interpreter into executing unintended commands or accessing data without proper authorization. Broken Authentication. Application functions related to authentication and session management are often implemented incorrectly, allowing attackers to compromise passwords, keys, or session tokens, or to exploit other implementation flaws to assume other users’ identities temporarily or permanently. Sensitive Data Exposure. Many web applications and APIs do not properly protect sensitive data, such as financial, healthcare, and PII. Attackers may steal or modify such weakly protected data to conduct credit card fraud, identity theft, or other crimes. Sensitive data may be compromised without extra protection, such as encryption at rest or in transit, and requires special precautions when exchanged with the browser. XML External Entities (XXE). Many older or poorly configured XML processors evaluate external entity references within XML documents. External entities can be used to disclose internal files using the file URI handler, internal file shares, internal port scanning, remote code execution, and denial of service attacks. Broken Access Control. Restrictions on what authenticated users are allowed to do are often not properly enforced. Attackers can exploit these flaws to access unauthorized functionality and/or data, such as access other users’ accounts, view sensitive files, modify other users’ data, change access rights, etc. Security Misconfiguration. Security misconfiguration is the most commonly seen issue. This is commonly a result of insecure default configurations, incomplete or ad hoc configurations, open cloud storage, misconfigured HTTP headers, and verbose error messages containing sensitive information. Not only must all operating systems, frameworks, libraries, and applications be securely configured, but they must be patched/upgraded in a timely fashion. Cross-Site Scripting XSS. XSS flaws occur whenever an application includes untrusted data in a new web page without proper validation or escaping, or updates an existing web page with user-supplied data using a browser API that can create HTML or JavaScript. XSS allows attackers to execute scripts in the victim’s browser which can hijack user sessions, deface web sites, or redirect the user to malicious sites. Insecure Deserialization. Insecure deserialization often leads to remote code execution. Even if deserialization flaws do not result in remote code execution, they can be used to perform attacks, including replay attacks, injection attacks, and privilege escalation attacks. Using Components with Known Vulnerabilities. Components, such as libraries, frameworks, and other software modules, run with the same privileges as the application. If a vulnerable component is exploited, such an attack can facilitate serious data loss or server takeover. Applications and APIs using components with known vulnerabilities may undermine application defenses and enable various attacks and impacts. Insufficient Logging & Monitoring. Insufficient logging and monitoring, coupled with missing or ineffective integration with incident response, allows attackers to further attack systems, maintain persistence, pivot to more systems, and tamper, extract, or destroy data. Most breach studies show time to detect a breach is over 200 days, typically detected by external parties rather than internal processes or monitoring.

Atlassian Drops Patches for Critical Jira Authentication Bypass Vulnerability

References

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