Connect with us

Hi, what are you looking for?



CISA Urges Organizations to Patch Actively Exploited Zimbra XSS Vulnerability

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday announced that it has expanded its Known Exploited Vulnerabilities Catalog with a zero-day recently identified in the Zimbra email platform.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday announced that it has expanded its Known Exploited Vulnerabilities Catalog with a zero-day recently identified in the Zimbra email platform.

Tracked as CVE-2022-24682, the security hole was made public on February 3, when Volexity warned that attacks exploiting it had been ongoing since December 2021.

Described as a cross-site scripting (XSS) vulnerability, the issue affects version 8.8.15 and prior of the open-source email platform. According to Zimbra, roughly 200,000 organizations use its email server, including more than a thousand government and financial institutions.

On February 5, Zimbra released a patch to address the vulnerability in Zimbra 8.8.15 P30, encouraging all users to update to the most recent release to remain protected.

On February 25, CISA added the security flaw to its “Must-Patch” list, encouraging federal agencies to apply the available patch by March 11 – as per Binding Operational Directive (BOD) 22-01, agencies are given two weeks to address recent vulnerabilities that are added to the catalog.

[ READ: CISA’s ‘Must Patch’ List Puts Spotlight on Vulnerability Management Processes ]

The agency also announced that three other vulnerabilities have been added to the list, though all of them are older issues. All three affect Microsoft products.

Advertisement. Scroll to continue reading.

The first of these is CVE-2017-8570, a remote code execution vulnerability in the Office suite that has been exploited in attacks for more than four years, including by the China-based threat actor tracked as KeyBoy.

Next in line is CVE-2017-0222, a memory corruption flaw in Internet Explorer that allows attackers to achieve remote code execution on a vulnerable system.

When addressing the bug in May 2017, Microsoft warned of ongoing attacks exploiting it, but provided no technical details on the observed exploitation.

In July 2017, however, the company announced patches for Windows XP to address critical vulnerabilities for which the hacking group known as the Shadow Brokers leaked exploits allegedly stolen from the NSA-linked Equation Group. CVE-2017-0222 was one of these flaws.

The fourth vulnerability CISA added to its Must-Patch list on Friday is CVE-2014-6352, a Windows Object Linking and Embedding (OLE) that was already being exploited in attacks when Microsoft patched it in November 2014.

Federal agencies have until August 25 to apply patches for these three vulnerabilities, provided they haven’t addressed them already.

Private companies have also been advised to prioritize patching of the vulnerabilities added to the Known Exploited Vulnerabilities Catalog.

Related: CISA Warns of Attacks Exploiting Recent Vulnerabilities in Zabbix Monitoring Tool

Related: CISA Urges Organizations to Patch Recent Chrome, Magento Zero-Days

Related: CISA Urges Organizations to Patch Exploited Windows Vulnerability

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.


Luxury retailer Neiman Marcus Group informed some customers last week that their online accounts had been breached by hackers.


As it evolves, web3 will contain and increase all the security issues of web2 – and perhaps add a few more.


A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...


Satellite TV giant Dish Network confirmed that a recent outage was the result of a cyberattack and admitted that data was stolen.


Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.