A critical vulnerability in Atlassian’s Confluence Server software is now under active attack.
Disclosed last week by Atlassian, CVE-2021-26084 is a remote code execution bug that is considered a critical security risk by the vendor. The flaw, which was rated a 9.8 on the CVSS scale, is due to an injection bug in the open source Object-Graph Navigation Language (OGNL) discovered and reported by security researcher Benny Jacob through Atlassian’s bug bounty program.
Troy Mursch, chief research officer with threat intelligence vendor Bad Packets, confirmed to SearchSecurity that CVE-2021-26084 was now being targeted in the wild.
“I can confirm Bad Packets honeypots have detected mass scanning and exploit activity targeting the Atlassian Confluence RCE vulnerability CVE-2021-26084 from hosts in Russia, Hong Kong, Brazil, Poland and Romania,” Mursch said. “Multiple proof-of-concepts have been published publicly demonstrating how to exploit this vulnerability.”
Administrators are being urged to update any on-premises versions of Atlassian’s Confluence Server collaboration software as hackers have now descended on the critical security flaw. Cloud-hosted versions of Confluence Server are not vulnerable to attack, Atlassian said.
According to Atlassian, the bug normally requires the attacker to be logged into the network to exploit, but under some circumstances, servers can be remotely exploited without any authentication.
I can confirm Bad Packets honeypots have detected mass scanning and exploit activity targeting the Atlassian Confluence RCE vulnerability CVE-2021-26084 from hosts in Russia, Hong Kong, Brazil, Poland and Romania. Troy MurschChief research officer, Bad Packets
In a demonstration of the flaw, researcher Harsh Jaiswal showed how the bug could be exploited to gain remote code execution.
“From our understanding & debugging we came to this conclusion: Attributes of #tag components within Velocity template are evaluated as OGNL Expressions to convert the template into HTML,” Jaiswal wrote.
For administrators, this means that getting the flaw patched as soon as possible is imperative. In some cases, Mursch said, it may already be too late. While Bad Packets doesn’t have an estimate on the number of vulnerable servers in the wild, the sheer volume of activity against the flaw should make the update a priority.
“Organizations using the on-premises version of Confluence need to immediately apply the update provided by Atlassian and check their servers for any indicators of compromise,” said Mursch.
“Given the level of scanning of exploit activity we’ve detected so far today, any unpatched servers are at immediate risk of compromise.”
Cisco Systems said it will not fix a critical vulnerability found in three of its SOHO router models. The bug, rated 9.8 in severity out of 10, could allow unauthenticated remote users to hijack targeted equipment and gain elevated privileges within effected systems.
Ransomware Cyber Attack on Molson Coors | IT Security News 12. March 2021 Brewery company Molson Coors has made it official that its IT infrastructure was reigning under a major cyber attack that has brought its Beverage production to a complete standstill. According to an update released through SEC filing, the company acknowledged the attack…
Cybersecurity experts have uncovered evidence that interconnects several multi-year and sprawling cyber-espionage campaigns to a Chinese military unit operating out of the city of Ürümqi in China’s western province of Xinjiang. According to a report released today by Recorded Future’s Insikt Group, the People’s Liberation Army (PLA) Unit 69010 is believed to have been behind a series…
Executive Summary Informations Name CVE-2021-1525 First vendor Publication 2021-06-04 Vendor Cve Last vendor Modification 2021-06-04 Security-Database Scoring CVSS v3 Cvss vector : N/A Overall CVSS Score NA Base Score NA Environmental Score NA impact SubScore NA Temporal Score NA Exploitabality Sub Score NA Calculate full CVSS 3.0 Vectors scores Security-Database Scoring CVSS v2 Cvss…
Israel cyber attack on Iran Natanz Nuclear Facility – IT Security News
12. April 2021 Just a day after Iran unveiled its new Uranium enrichment centrifuges at its Natanz Nuclear facility, the IT infrastructure at the nuclear power plant was sabotaged by a digital attack likely to have been launched by…
Endpoint Security , Governance & Risk Management , IT Risk Management Flaw Could Enable Access to Secret Encryption Key Prajeet Nair (@prajeetspeaks) • March 1, 2021 Rockwell’s Studio 5000 Logix Designer is among products affected by a vulnerability. (Source: Rockwell) A critical authentication bypass vulnerability could enable hackers to remotely compromise programmable logic…
