bug#52228: NSS CVE-2021-43527 "memory corruption validating dsa/rsa-pss signatures"

[Mark H Weaver <mhw@netris.org>]

Hi Leo,

Leo Famulari <leo@famulari.name> writes:
> An attacker-controlled memory corruption vulnerability was discovered in
> NSS:
>
> https://bugs.chromium.org/p/project-zero/issues/detail?id=2237

Thanks for bringing this to our attention.  I just pushed a new
'gnuzilla-updates' branch, which is 'master' plus two new commits:

--8<---------------cut here---------------start------------->8---
commit 0863c665ebc54046baac7db1fde1f1f0e24476d0
Author: Mark H Weaver <mhw@netris.org>
Date:   Thu Dec 2 20:23:16 2021 -0500

  UNTESTED: gnu: nss: Fix CVE-2021-43527 via graft.
  
  * gnu/packages/patches/nss-CVE-2021-43527.patch: New file.
  * gnu/local.mk (dist_patch_DATA): Add it.
  * gnu/packages/nss.scm (nss/fixed): New variable
  (nss)[replacement]: New field.

commit bc6afae2466017d1a19725a86e69e666249a1b71
Author: Mark H Weaver <mhw@netris.org>
Date:   Thu Dec 2 20:14:05 2021 -0500

  UNTESTED: gnu: icecat: Fix CVE-2021-43527.
  
  * gnu/packages/patches/icecat-CVE-2021-43527.patch: New file.
  * gnu/local.mk (dist_patch_DATA): Add it.
  * gnu/packages/gnuzilla.scm (icecat-source): Apply it.
--8<---------------cut here---------------end--------------->8---

As the summary lines indicate, I haven't yet tested these patches, apart
from verifying that the patched sources are built correctly.

If I'm not mistaken, ci.guix.gnu.org will soon evaluate the
'gnuzilla-updates' branch and perform the necessary rebuilds.
If all goes well, I'll cherry-pick these commits to 'master'.

If someone else verifies that the commits are good before I get to it,
please feel free to cherry-pick them to 'master' on my behalf (with the
"UNTESTED: " prefixes removed, of course).

     Regards,
       Mark

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