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## Summary Loofah `< 2.19.1` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. ## Mitigation Upgrade to Loofah `>= 2.19.1`. ## Severity The Loofah maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References - [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html) - https://hackerone.com/reports/1684163 ## Credit This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
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Web application firewalls from AWS, Cloudflare, F5, Imperva, and Palo Alto Networks are vulnerable to a database attack using the popular JavaScript Object Notation (JSON) format.
Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `>= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.
Software firms and the National Security Agency urge developers to move to memory-safe programming languages to eliminate a major source of high-severity flaws.
Redmine 5.x before 5.0.4 allows downloading of file attachments of any Issue or any Wiki page due to insufficient permission checks. Depending on the configuration, this may require login as a registered user.
A possible escalation to RCE vulnerability exists when using YAML serialized columns in Active Record < 7.0.3.1, <6.1.6.1, <6.0.5.1 and <5.2.8.1 which could allow an attacker, that can manipulate data in the database (via means like SQL injection), the ability to escalate to an RCE.
Insecure permissions in Chocolatey Ruby package v3.1.2.1 and below grants all users in the Authenticated Users group write privileges for the path C:\tools\ruby31 and all files located in that folder.
Sinatra is a domain-specific language for creating web applications in Ruby. An issue was discovered in Sinatra 2.0 before 2.2.3 and 3.0 before 3.0.4. An application is vulnerable to a reflected file download (RFD) attack that sets the Content-Disposition header of a response when the filename is derived from user-supplied input. Version 2.2.3 and 3.0.4 contain patches for this issue.
A remote code execution (RCE) vulnerability in Optica allows unauthenticated attackers to execute arbitrary code via specially crafted JSON payloads. Specially crafted JSON payloads may lead to RCE (remote code execution) on the attacked system running Optica. The vulnerability was patched in v. 0.10.2, where the call to the function `oj.load` was changed to `oj.safe_load`.