Nation State Hackers Exploiting Zero-Day in Roundcube Webmail Software

The threat actor known as Winter Vivern has been observed exploiting a zero-day flaw in Roundcube webmail software on October 11, 2023, to harvest email messages from victims' accounts. "Winter Vivern has stepped up its operations by using a zero-day vulnerability in Roundcube," ESET security...

APT Winter Vivern Exploits New Roundcube 0-Day to Target European Entities

By Waqas ESET Research Uncovers New Targeted Campaign Impacting European Governments and Think Tanks. This is a post from HackRead.com Read the original post: APT Winter Vivern Exploits New Roundcube 0-Day to Target European Entities...

Researchers Uncover Years-Long Cyber Espionage on Foreign Embassies in Belarus

A hitherto undocumented threat actor operating for nearly a decade and codenamed MoustachedBouncer has been attributed to cyber espionage attacks aimed at foreign embassies in Belarus. "Since 2020, MoustachedBouncer has most likely been able to perform adversary-in-the-middle AitM attacks at the...

Cross-Site Scripting (XSS)

wintercms/winter and winter/storm are vulnerable to Cross-Site Scripting XSS attacks. The library does not properly escape user input, which allows an attacker with backend.managebranding permissions to upload SVGs as the application logo and execute malicious javascript on victim's browser...

CVE-2023-37269

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Users with the backend.managebranding permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting...

Cross site scripting

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Users with the backend.managebranding permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting...

GHSA-WJW2-4J7J-6GC3 Winter CMS stored XSS through privileged upload of SVG file

Impact Users with the backend.managebranding permission can upload SVGs as the application logo. Previously, SVG uploads were not sanitized, which could have allowed a stored XSS attack. Although this was a security issue, it's important to note that its severity is low. To exploit the...

Winter CMS stored XSS through privileged upload of SVG file

Impact Users with the backend.managebranding permission can upload SVGs as the application logo. Previously, SVG uploads were not sanitized, which could have allowed a stored XSS attack. Although this was a security issue, it's important to note that its severity is low. To exploit the...

CVE-2023-37269 Winter CMS vulnerable to stored XSS through privileged upload of SVG file

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Users with the backend.managebranding permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting...

CVE-2023-37269

Winter CMS is vulnerable to a stored XSS due to unsanitized SVG uploads in the branding logo function prior to v1.2.3. The issue requires an attacker with backend.manage_branding permission (or higher) and user interaction by visiting the URL of the malicious SVG; exploitation is further constrai...

CVE-2023-37269 Winter CMS vulnerable to stored XSS through privileged upload of SVG file

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Users with the backend.managebranding permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting...

winter-last-minute.de Cross Site Scripting vulnerability OBB-3487299

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

PT-2023-25872 · Unknown · Winter Cms

Name of the Vulnerable Software and Affected Versions: Winter CMS versions prior to 1.2.3 Description: The issue concerns a stored cross-site scripting XSS attack that could be executed by uploading malicious SVG files as the application logo. Users with the backend.manage branding permission can...

Winter 跨站脚本漏洞

Winter is a free, open source, self-hosted CMS platform based on the Laravel PHP framework. A cross-site scripting vulnerability exists in Winter prior to version 1.2.3, which stems from an uncleaned SVG upload, which could lead to a stored cross-site scripting XSS attack...

Winter Vivern APT targets EU with Zimbra flaw

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary Winter Vivern abuses CVE-2022-27926 to attack public Zimbra webmail portals of government entities. To receive real-time threat advisories, please follow HiveForce Labs on LinkedIn...

Winter Vivern APT Targets European Government Entities with Zimbra Vulnerability

The advanced persistent threat APT actor known as Winter Vivern is now targeting officials in Europe and the U.S. as part of an ongoing cyber espionage campaign. "TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals tha...

Winter Vivern APT Targets European Government Entities with Zimbra Vulnerability

The advanced persistent threat APT actor known as Winter Vivern is now targeting officials in Europe and the U.S. as part of an ongoing cyber espionage campaign. "TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals tha...

Winter Vivern with Pro-Russian Objectives Targets Government

Threat Level Actor Report For a detailed threat advisory, download the pdf file here Summary The Winter Vivern Advanced Persistent Threat APT is a relatively underreported group that operates with pro-Russian objectives and targets government agencies. To receive real-time threat advisories, plea...

Winter Vivern APT Group Targeting Indian, Lithuanian, Slovakian, and Vatican Officials

The advanced persistent threat known as Winter Vivern has been linked to campaigns targeting government officials in India, Lithuania, Slovakia, and the Vatican since 2021. The activity targeted Polish government agencies, the Ukraine Ministry of Foreign Affairs, the Italy Ministry of Foreign...

Winter Vivern APT Group Targeting Indian, Lithuanian, Slovakian, and Vatican Officials

The advanced persistent threat known as Winter Vivern has been linked to campaigns targeting government officials in India, Lithuania, Slovakia, and the Vatican since 2021. The activity targeted Polish government agencies, the Ukraine Ministry of Foreign Affairs, the Italy Ministry of Foreign...