[poky][master][PATCH] bzip2: Fix CVE-2019-12900

[poky][master][PATCH] bzip2: Fix CVE-2019-12900

[Saloni Jain]

From: Sana Kazi <Sana.Kazi@kpit.com>

Added patch for CVE-2019-12900 as backport from upstream.
Fixes out of bound access discovered while fuzzying karchive.

Tested by: Sana.Kazi@kpit.com

Signed-off-by: Saloni Jain <Saloni.Jain@kpit.com>
---
 .../bzip2/bzip2-1.0.6/CVE-2019-12900.patch         | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 meta/recipes-extended/bzip2/bzip2-1.0.6/CVE-2019-12900.patch

diff --git a/meta/recipes-extended/bzip2/bzip2-1.0.6/CVE-2019-12900.patch b/meta/recipes-extended/bzip2/bzip2-1.0.6/CVE-2019-12900.patch
new file mode 100644
index 0000000..94ddd73
--- /dev/null
+++ b/meta/recipes-extended/bzip2/bzip2-1.0.6/CVE-2019-12900.patch
@@ -0,0 +1,35 @@
+From 74de1e2e6ffc9d51ef9824db71a8ffee5962cdbc Mon Sep 17 00:00:00 2001
+From: Albert Astals Cid <aacid@kde.org>
+Date: Tue, 28 May 2019 19:35:18 +0200
+Subject: [PATCH] Make sure nSelectors is not out of range
+
+nSelectors is used in a loop from 0 to nSelectors to access selectorMtf
+which is
+UChar    selectorMtf[BZ_MAX_SELECTORS];
+so if nSelectors is bigger than BZ_MAX_SELECTORS it'll do an invalid memory
+access
+Fixes out of bounds access discovered while fuzzying karchive
+
+Link: https://gitlab.com/federicomenaquintero/bzip2/commit/74de1e2e6ffc9d51ef9824db71a8ffee5962cdbc.patch
+
+Upstream-Status: Backport
+Signed-off-by: Saloni Jain <Saloni.Jain@kpit.com>
+---
+ decompress.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/decompress.c b/decompress.c
+index ab6a624..f3db91d 100644
+--- a/decompress.c
++++ b/decompress.c
+@@ -287,7 +287,7 @@ Int32 BZ2_decompress ( DState* s )
+       GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
+       if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
+       GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
+-      if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
++      if (nSelectors < 1 || nSelectors > BZ_MAX_SELECTORS) RETURN(BZ_DATA_ERROR);
+       for (i = 0; i < nSelectors; i++) {
+          j = 0;
+          while (True) {
+--
+2.22.0
--
2.7.4

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✗ patchtest: failure for bzip2: Fix CVE-2019-12900 (rev7)

[Patchwork]

== Series Details ==

Series: bzip2: Fix CVE-2019-12900 (rev7)
Revision: 7
URL   : https://patchwork.openembedded.org/series/18434/
State : failure

== Summary ==


Thank you for submitting this patch series to OpenEmbedded Core. This is
an automated response. Several tests have been executed on the proposed
series by patchtest resulting in the following failures:



* Patch            [poky,master] bzip2: Fix CVE-2019-12900
 Issue             Missing or incorrectly formatted CVE tag in included patch file [test_cve_tag_format] 
  Suggested fix    Correct or include the CVE tag on cve patch with format: "CVE: CVE-YYYY-XXXX"



If you believe any of these test results are incorrect, please reply to the
mailing list (openembedded-core@lists.openembedded.org) raising your concerns.
Otherwise we would appreciate you correcting the issues and submitting a new
version of the patchset if applicable. Please ensure you add/increment the
version number when sending the new version (i.e. [PATCH] -> [PATCH v2] ->
[PATCH v3] -> ...).

---
Guidelines:     https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
Test framework: http://git.yoctoproject.org/cgit/cgit.cgi/patchtest
Test suite:     http://git.yoctoproject.org/cgit/cgit.cgi/patchtest-oe