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Bug 802219 (CVE-2021-36740) - <www-servers/varnish-6.5.2: HTTP request smuggling (CVE-2021-36740)
Summary: <www-servers/varnish-6.5.2: HTTP request smuggling (CVE-2021-36740)
Status: RESOLVED FIXED
Alias: CVE-2021-36740
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor
Assignee: Gentoo Security
URL: https://docs.varnish-software.com/sec...
Whiteboard: B4 [noglsa]
Keywords:
Depends on: 810670
Blocks:
  Show dependency tree
 
Reported: 2021-07-15 05:29 UTC by John Helmert III
Modified: 2021-08-29 13:58 UTC (History)
1 user (show)

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Package list:
Runtime testing required: ---

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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-07-15 05:29:19 UTC 
CVE-2021-36740:

Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.


Please bump.
Comment 1 NATTkA bot gentoo-dev 2021-07-29 17:21:01 UTC Comment hidden (obsolete)
Comment 2 NATTkA bot gentoo-dev 2021-07-29 17:29:09 UTC Comment hidden (obsolete)
Comment 3 NATTkA bot gentoo-dev 2021-07-29 17:37:05 UTC Comment hidden (obsolete)
Comment 4 NATTkA bot gentoo-dev 2021-07-29 17:45:08 UTC Comment hidden (obsolete)
Comment 5 NATTkA bot gentoo-dev 2021-07-29 17:53:11 UTC Comment hidden (obsolete)
Comment 6 NATTkA bot gentoo-dev 2021-07-29 18:01:07 UTC Comment hidden (obsolete)
Comment 7 NATTkA bot gentoo-dev 2021-07-29 18:09:24 UTC Comment hidden (obsolete)
Comment 8 Anthony Basile gentoo-dev 2021-08-24 20:49:39 UTC 
(In reply to John Helmert III from comment #0)
> CVE-2021-36740:
> 
> Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL
> authorization bypass via a large Content-Length header for a POST request.
> This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x
> and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.
> 
> 
> Please bump.

Okay varnish 6.5.2 and 6.6.1 are in the tree.  But I'm not sure from that description if 6.3.2 and 6.4.0 are affected.  If memory serves, someone asked for those specific version.
Comment 9 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-08-24 23:03:45 UTC 
(In reply to Anthony Basile from comment #8)
> (In reply to John Helmert III from comment #0)
> > CVE-2021-36740:
> > 
> > Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL
> > authorization bypass via a large Content-Length header for a POST request.
> > This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x
> > and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.
> > 
> > 
> > Please bump.
> 
> Okay varnish 6.5.2 and 6.6.1 are in the tree.  But I'm not sure from that
> description if 6.3.2 and 6.4.0 are affected.  If memory serves, someone
> asked for those specific version.

Thank you! Upstream advisory says they're vulnerable. Please file a stablereq when ready.
Comment 10 Anthony Basile gentoo-dev 2021-08-27 12:43:51 UTC 
(In reply to John Helmert III from comment #9)
> (In reply to Anthony Basile from comment #8)
> > (In reply to John Helmert III from comment #0)
> > > CVE-2021-36740:
> > > 
> > > Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL
> > > authorization bypass via a large Content-Length header for a POST request.
> > > This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x
> > > and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.
> > > 
> > > 
> > > Please bump.
> > 
> > Okay varnish 6.5.2 and 6.6.1 are in the tree.  But I'm not sure from that
> > description if 6.3.2 and 6.4.0 are affected.  If memory serves, someone
> > asked for those specific version.
> 
> Thank you! Upstream advisory says they're vulnerable. Please file a
> stablereq when ready.

I'm actually on both amd64 and x86 and tested.  They're fine. But its bad practice to stabilize your own packages just because you want a second eye.

Let's go for stabilizing 6.5.2 and 6.6.1.
Comment 11 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-08-27 14:20:16 UTC 
Thanks! Note we're detaching stabilization from security bugs, so I went ahead and filed a dedicated stabilization bug.
Comment 12 Anthony Basile gentoo-dev 2021-08-29 11:34:43 UTC 
(In reply to John Helmert III from comment #11)
> Thanks! Note we're detaching stabilization from security bugs, so I went
> ahead and filed a dedicated stabilization bug.

The vulnerable versions are off the tree.  You may proceed with this bug.
Comment 13 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-08-29 13:58:37 UTC 
Thanks! GLSA vote: no. Closing