CVEs-PoC/2020/CVE-2020-5243.md

CVE-2020-5243

Description

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.

POC

Reference

No PoCs from references.

Github

• https://github.com/doyensec/regexploit
• https://github.com/engn33r/awesome-redos-security
• https://github.com/retr0-13/regexploit