Summary
It was discovered that websocket-extensions does not properly parse
special headers. A remote attacker could use this issue to cause regex
backtracking, resulting in a denial of service. (CVE-2020-7663)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | ruby-websocket-extensions | 0.1.2-1+deb9u1build0.16.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | ruby-websocket-extensions | 0.1.2-1+deb9u1build0.18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | ruby-websocket-extensions | 0.1.2-1+deb9u1build0.20.04.1 |
Vulnerabilities 1
-
High 8.2
Regular Expression Denial of Service in websocket-extensions (RubyGem)
websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte seque…
References
-
report
https://ubuntu.com/security/CVE-2020-7663