794034 – (CVE-2021-29509) <www-servers/puma-5.3.1: keepalive connections causing denial of service (CVE-2021-29509)

Bug 794034 (CVE-2021-29509) - <www-servers/puma-5.3.1: keepalive connections causing denial of service (CVE-2021-29509)

Summary: <www-servers/puma-5.3.1: keepalive connections causing denial of service (CVE...

Status:	RESOLVED FIXED

Alias:	CVE-2021-29509

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/puma/puma/security...
Whiteboard:	B3 [glsa+]
Keywords:

Depends on:
Blocks:

Reported:	2021-06-03 13:21 UTC by John Helmert III
Modified:	2022-08-14 21:43 UTC (History)
CC List:	1 user (show)

See Also:
Package list:	www-servers/puma-5.3.2-r1
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description John Helmert III archtester

2021-06-03 13:21:37 UTC

CVE-2021-29509:

The fix for CVE-2019-16770 was incomplete. The original fix only protected existing connections that had already been accepted from having their requests starved by greedy persistent-connections saturating all threads in the same process. However, new connections may still be starved by greedy persistent-connections saturating all threads in all processes in the cluster.

A puma server which received more concurrent keep-alive connections than the server had threads in its threadpool would service only a subset of connections, denying service to the unserved connections.


Please stabilize 5.3.1.

Comment 1 Agostino Sarubbo gentoo-dev

2021-06-06 07:15:15 UTC

amd64 stable

Comment 2 Agostino Sarubbo gentoo-dev

2021-06-06 07:16:27 UTC

x86 stable.

Maintainer(s), please cleanup.
Security, please vote.

Comment 3 Hans de Graaff gentoo-dev

2021-06-06 07:19:11 UTC

Cleanup done.

Comment 4 John Helmert III archtester

2021-06-06 15:35:38 UTC

Thank you!

Comment 5 NATTkA bot gentoo-dev

2021-06-22 18:20:26 UTC Comment hidden (obsolete)

Unable to check for sanity:

> no match for package: www-servers/puma-5.3.2

Comment 6 NATTkA bot gentoo-dev

2022-02-05 07:00:46 UTC

Unable to check for sanity:

> no match for package: www-servers/puma-5.3.2-r1

Comment 7 John Helmert III archtester

2022-08-14 05:05:17 UTC

GLSA request filed

Comment 8 Larry the Git Cow gentoo-dev

2022-08-14 21:43:35 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=74f54f14d9074878f0b2b711ab3064799b15e9cb

commit 74f54f14d9074878f0b2b711ab3064799b15e9cb
Author:     GLSAMaker <glsamaker@gentoo.org>
AuthorDate: 2022-08-14 21:41:58 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2022-08-14 21:43:20 +0000

    [ GLSA 202208-28 ] Puma: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/794034
    Bug: https://bugs.gentoo.org/817893
    Bug: https://bugs.gentoo.org/833155
    Bug: https://bugs.gentoo.org/836431
    Signed-off-by: GLSAMaker <glsamaker@gentoo.org>
    Signed-off-by: Sam James <sam@gentoo.org>

 glsa-202208-28.xml | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

Comment 9 Sam James archtester

2022-08-14 21:43:50 UTC

GLSA done, all done.