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Bug#993898: marked as done (buster-pu: package btrbk/0.27.1-1+deb10u1)

Your message dated Sat, 09 Oct 2021 12:11:43 +0100
with message-id <896b7609401ceb0e1c537222e26587ea2351415d.camel@adam-barratt.org.uk>
and subject line Closing bugs for fixes included in the 10.11 point release
has caused the Debian Bug report #993898,
regarding buster-pu: package btrbk/0.27.1-1+deb10u1
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
993898: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993898
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: release.debian.org
Severity: normal
Tags: buster
User: release.debian.org@packages.debian.org
Usertags: pu


The attached debdiff for btrbk fixes CVE-2021-38173 in Buster.

This CVE is marked as no-dsa by the security team.

The same patch was already uploaded to unstable with version 0.27.1-2.

  Thorsten


diff -Nru btrbk-0.27.1/debian/changelog btrbk-0.27.1/debian/changelog
--- btrbk-0.27.1/debian/changelog	2018-12-05 22:27:30.000000000 +0100
+++ btrbk-0.27.1/debian/changelog	2021-08-29 19:03:02.000000000 +0200
@@ -1,3 +1,12 @@
+btrbk (0.27.1-1+deb10u1) buster; urgency=high
+
+  * Non-maintainer upload by the LTS Team.
+  * CVE-2021-38173
+    fixes a security vulnerability which would have allowed for an
+    arbitrary code execution
+
+ -- Thorsten Alteholz <debian@alteholz.de>  Sun, 29 Aug 2021 19:03:02 +0200
+
 btrbk (0.27.1-1) unstable; urgency=medium
 
   * New upstream release.
diff -Nru btrbk-0.27.1/debian/patches/CVE-2021-38173.patch btrbk-0.27.1/debian/patches/CVE-2021-38173.patch
--- btrbk-0.27.1/debian/patches/CVE-2021-38173.patch	1970-01-01 01:00:00.000000000 +0100
+++ btrbk-0.27.1/debian/patches/CVE-2021-38173.patch	2021-08-29 19:03:02.000000000 +0200
@@ -0,0 +1,32 @@
+From 58212de771c381cd4fa05625927080bf264e9584 Mon Sep 17 00:00:00 2001
+From: Axel Burri <axel@tty0.ch>
+Date: Sun, 21 Mar 2021 12:53:22 +0100
+Subject: [PATCH] ssh_filter_btrbk.sh: fix alternation regex
+
+Security vulnerability fixed in alternation regex. Specialy crafted
+commands may be executed without being propely checked.
+
+Affects all versions >= btrbk-v0.23.0
+
+Regression from:
+
+   ccb5ed5e71 ssh_filter_btrbk: allow "realpath" and "cat /proc/self/mounts" on targets
+
+Reported by: @protree (responsible disclosure)
+---
+ ssh_filter_btrbk.sh | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+Index: btrbk-0.27.1/ssh_filter_btrbk.sh
+===================================================================
+--- btrbk-0.27.1.orig/ssh_filter_btrbk.sh	2021-08-30 15:04:39.595339393 +0200
++++ btrbk-0.27.1/ssh_filter_btrbk.sh	2021-08-30 15:04:39.591339393 +0200
+@@ -87,7 +87,7 @@
+         return 0
+     fi
+ 
+-    exact_cmd_match="^${allow_exact_list}$";
++    exact_cmd_match="^(${allow_exact_list})$";
+     if [[ $SSH_ORIGINAL_COMMAND =~ $exact_cmd_match ]] ; then
+         return 0
+     fi
diff -Nru btrbk-0.27.1/debian/patches/series btrbk-0.27.1/debian/patches/series
--- btrbk-0.27.1/debian/patches/series	1970-01-01 01:00:00.000000000 +0100
+++ btrbk-0.27.1/debian/patches/series	2021-08-29 19:03:02.000000000 +0200
@@ -0,0 +1 @@
+CVE-2021-38173.patch

--- End Message ---
--- Begin Message --- 
Package: release.debian.org
Version: 10.11

Hi,

The updates relating to these bugs were included in this morning's
10.11 point release for buster.

Regards,

Adam

--- End Message ---
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