Bug 1494401 – CVE-2017-14227 libbson: Heap based buffer over read in the bson_utf8_validate function

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Bug 1494401 - (CVE-2017-14227) CVE-2017-14227 libbson: Heap based buffer over read in the bson_utf8_validate function

Summary:	CVE-2017-14227 libbson: Heap based buffer over read in the bson_utf8_validate...

Status:	NEW

Aliases:	CVE-2017-14227

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20170907,reported=2...
Keywords:	Security

Depends On:	1494402 1489355
Blocks:
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Reported:	2017-09-22 04:06 EDT by Andrej Nemec
Modified:	2017-10-09 10:50 EDT (History)
CC List:	2 users (show)

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Description Andrej Nemec 2017-09-22 04:06:25 EDT

In MongoDB libbson 1.7.0, the bson_iter_codewscope function in bson-iter.c miscalculates a bson_utf8_validate length argument, which allows remote attackers to cause a denial of service (heap-based buffer over-read in the bson_utf8_validate function in bson-utf8.c), as demonstrated by bson-to-json.c.

Upstream issue:

https://jira.mongodb.org/browse/CDRIVER-2269

Upstream patches:

https://github.com/mongodb/libbson/commit/42900956dc461dfe7fb91d93361d10737c1602b3
https://github.com/mongodb/libbson/commit/e10059393466f667b031077229cfa98504ce34f3

Comment 1 Andrej Nemec 2017-09-22 04:06:48 EDT

Created libbson tracking bugs for this issue:

Affects: epel-7 [bug 1494402]

Comment 2 Fedora Update System 2017-09-26 19:54:40 EDT

libbson-1.6.3-2.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2017-09-27 01:27:29 EDT

libbson-1.3.5-4.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2017-09-30 02:31:28 EDT

libbson-1.8.0-1.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2017-10-09 10:50:14 EDT

libbson-1.3.5-4.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report.

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