CVE-2018-20164 describes a Regular Expression Denial of Service (ReDoS) vulnerability in UA-Parser UAP-Core versions prior to 0.6.0, specifically within its regex.yaml file. This flaw allows remote attackers to overload a server by sending HTTP(S) requests with a crafted User-Agent header containing a long string of digits. The vulnerability has a CVSS score of 5.3 (Medium), indicating a low attack complexity and no user interaction required, with the primary impact being a denial of service (availability). While the EPSS score is low, suggesting a low probability of exploitation, it is important to note the potential for service disruption. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei. The vulnerability has received minimal community discussion and media coverage, suggesting it is not a widely publicized or actively targeted threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.6.0CPE matchmatch criteria | cpe:2.3:a:uaparser:user_agent_parser-core:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.