Atlassian Releases Patch for Confluence Zero
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2021-26084 | Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability CVE-2021-26084 is an OGNL injection vulnerability (CWE-917) in Atlassian Confluence Server and Data Center that may allow an unauthenticated attacker to execute arbitrary code. Any organization running Confluence Server or Data Center is potentially affected. It is significant because it is listed in CISA's Known Exploited Vulnerabilities catalog with known ransomware use, and EPSS assigns a 100.0% probability of exploitation within 30 days (100th percentile). Do: Apply updates to Confluence Server and Data Center per Atlassian's instructions, which is the required action in the CISA KEV listing. Prioritize remediation given confirmed in-the-wild exploitation and known ransomware use. | 9.8 | 100% | KEV ransomware PoC |
| — | |
| CVE-2022-26134 | Unauthenticated OGNL Injection RCE in Atlassian Confluence Server/Data Center Atlassian Confluence Server and Data Center contain an unauthenticated remote code execution flaw caused by improper neutralization of expression-language (OGNL) input (CWE-917): an attacker with network access to the application can submit a crafted request that is evaluated as an expression and executed by the server. Successful exploitation lets a remote, unauthenticated attacker run arbitrary code with the privileges of the Confluence process, without any credentials. All organizations running self-managed Confluence Server or Data Center are affected, particularly instances exposed to the internet; Confluence Cloud is not listed among the affected products. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV on 2022-06-02 with ransomware use marked as known, and EPSS assigns a 100% probability of exploitation within 30 days (100th percentile). CVSS has not yet been scored in this data, but the KEV listing and known ransomware use make unpatched, internet-facing instances a top-priority patching target. Do: Immediately upgrade to the patched Confluence release specified in Atlassian's 2022-06-02 security advisory, and until patched follow the CISA required action to block all internet traffic to and from affected instances. Because in-the-wild exploitation and ransomware use are confirmed, also hunt for compromise indicators on both patched and unpatched hosts, such as webshells, unexpected child processes of the Confluence service, and unusual outbound connections. | 9.8 | 100% | KEV ransomware PoC ×2 |
| largetens of thousands of internet-exposed instances (public scan counts of roughly 60,000-90,000 Confluence Server/Data Center hosts around the June 2022… |
Full article336 words · extracted from thehackernews.com · click to collapse
Ravie LakshmananJun 04, 2022
Atlassian on Friday rolled out fixes to address a critical security flaw affecting its Confluence Server and Data Center products that have come under active exploitation by threat actors to achieve remote code execution.
Tracked as CVE-2022-26134, the issue is similar to CVE-2021-26084 — another security flaw the Australian software company patched in August 2021.
Both relate to a case of Object-Graph Navigation Language (OGNL) injection that could be exploited to achieve arbitrary code execution on a Confluence Server or Data Center instance.
The newly discovered shortcoming impacts all supported versions of Confluence Server and Data Center, with every version after 1.3.0 also affected. It's been resolved in the following versions -
- 7.4.17
- 7.13.7
- 7.14.3
- 7.15.2
- 7.16.4
- 7.17.4
- 7.18.1
According to stats from internet asset discovery platform Censys, there are about 9,325 services across 8,347 distinct hosts running a vulnerable version of Atlassian Confluence, with most instances located in the U.S., China, Germany, Russia, and France.
Evidence of active exploitation of the flaw, likely by attackers of Chinese origin, came to light after cybersecurity firm Volexity discovered the flaw over the Memorial Day weekend in the U.S. during an incident response investigation.
"The targeted industries/verticals are quite widespread," Steven Adair, founder and president of Volexity, said in a series of tweets. "This is a free-for-all where the exploitation seems coordinated."
"It is clear that multiple threat groups and individual actors have the exploit and have been using it in different ways. Some are quite sloppy and others are a bit more stealth."
The U.S. Cybersecurity and Infrastructure Security Agency (CISA), besides adding the zero-day bug to its Known Exploited Vulnerabilities Catalog, has also urged federal agencies to immediately block all internet traffic to and from the affected products and either apply the patches or remove the instances by June 6, 2022, 5 p.m. ET.
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Text extracted automatically; images, tables and formatting may be missing. Original: https://thehackernews.com/2022/06/atlassian-releases-patch-for-confluence.html