Bug 808681 – <net-vpn/tor-{0.4.5.10, 0.4.6.7}: Denial of service (CVE-2021-38385)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Sam James 2021-08-17 04:49:11 UTC]

See https://lists.torproject.org/pipermail/tor-packagers/2021-August/000128.html.

Description:
"
    - Resolve an assertion failure caused by a behavior mismatch between
      our batch-signature verification code and our single-signature
      verification code. This assertion failure could be triggered
      remotely, leading to a denial of service attack. We fix this issue
      by disabling batch verification. Fixes bug 40078; bugfix on
      0.2.6.1-alpha. This issue is also tracked as TROVE-2021-007 and
      CVE-2021-38385. Found by Henry de Valence.
"

Releases (for us): 0.4.5.10, 0.4.6.7. Please bump, thanks!

[Comment 1 Anthony Basile 2021-08-17 14:03:53 UTC]

These are in the tree now.  Tor is very good about pushing out working products, so let's go ahead and stabilize.

[Comment 2 Sam James 2021-08-17 14:20:59 UTC]

(In reply to Anthony Basile from comment #1)
> These are in the tree now.  Tor is very good about pushing out working
> products, so let's go ahead and stabilize.

Thanks!

[Comment 3 Sam James 2021-08-17 21:38:24 UTC]

ppc done

[Comment 4 Sam James 2021-08-17 21:38:32 UTC]

ppc64 done

[Comment 5 Sam James 2021-08-18 01:41:13 UTC]

arm done

[Comment 6 Sam James 2021-08-18 01:45:52 UTC]

x86 done

[Comment 7 Sam James 2021-08-19 01:06:14 UTC]

arm64 done

[Comment 8 Agostino Sarubbo 2021-08-19 01:26:33 UTC]

amd64 stable.

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

[Comment 9 Anthony Basile 2021-08-24 20:18:57 UTC]

(In reply to Agostino Sarubbo from comment #8)
> amd64 stable.
> 
> Maintainer(s), please cleanup.
> Security, please vote.

the vulnerable version is off the tree

[Comment 10 John Helmert III 2021-08-24 20:23:32 UTC]

(In reply to Anthony Basile from comment #9)
> (In reply to Agostino Sarubbo from comment #8)
> > amd64 stable.
> > 
> > Maintainer(s), please cleanup.
> > Security, please vote.
> 
> the vulnerable version is off the tree

Thanks!

[Comment 11 NATTkA bot 2021-09-22 15:28:29 UTC]

Unable to check for sanity:

> no match for package: net-vpn/tor-0.4.5.10

[Comment 12 Anthony Basile 2021-09-22 15:29:41 UTC]

(In reply to NATTkA bot from comment #11)
> Unable to check for sanity:
> 
> > no match for package: net-vpn/tor-0.4.5.10

I've dropped 0.4.5.10 from the tree.  There's no reason to keep it with 0.4.6.7.

[Comment 13 John Helmert III 2023-01-27 05:52:19 UTC]

GLSA request filed

[Comment 14 Larry the Git Cow 2023-05-03 09:54:32 UTC]

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

https://gitweb.gentoo.org/data/glsa.git/commit/?id=464847c4e70c07cfb07a8715f613e418da18698e

commit 464847c4e70c07cfb07a8715f613e418da18698e
Author:     GLSAMaker <[e-mail]>
AuthorDate: 2023-05-03 09:53:19 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2023-05-03 09:54:23 +0000

    [ GLSA 202305-11 ] Tor: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/808681
    Bug: https://bugs.gentoo.org/852821
    Bug: https://bugs.gentoo.org/890618
    Signed-off-by: GLSAMaker <[e-mail]>
    Signed-off-by: Sam James <[e-mail]>

 glsa-202305-11.xml | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)