# Denial of Service in uap-core when processing crafted User-Agent strings

Source: https://junglewise.ai/threats/denial-of-service-in-uap-core-when-processing-crafted-user-agent-597ae692  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-03-10  
License: CC BY 4.0 with a link back

Severity: info · Published 2020-03-10

Denial of Service in uap-core when processing crafted User-Agent strings

Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Informational severity, published 10 March 2020.

**Which products and versions are affected?** user_agent_parser (RubyGems) ECOSYSTEM:introduced=0,fixed=2.6.0.

**Is there a fix for This vulnerability?** Yes. user_agent_parser (RubyGems): upgrade to 2.6.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run user_agent_parser (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- user_agent_parser (RubyGems): upgrade to 2.6.0 or later

  ```sh
  bundle update user_agent_parser
  ```


## Affected products

- user_agent_parser (RubyGems) ECOSYSTEM:introduced=0,fixed=2.6.0

## Related threats

- [uap-core ReDoS in User-Agent parsing](https://junglewise.ai/threats/cve-2020-5243-uap-core-redos-in-user-agent-parsing)