CVE-2020-11076

Published: 22 May 2020

In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
puma Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Ignored (end of life)
	focal	Released (3.12.4-1ubuntu2+esm1) Available with Ubuntu Pro
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Not vulnerable (5.5.2-2ubuntu2)
	kinetic	Not vulnerable (5.5.2-2ubuntu2)
	lunar	Not vulnerable (5.6.5-3ubuntu1)
	mantic	Not vulnerable (5.6.5-3ubuntu1)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	Patches: upstream: https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

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