Bug 1370146 (CVE-2016-6303) - CVE-2016-6303 openssl: Integer overflow in MDC2_Update()
Summary: CVE-2016-6303 openssl: Integer overflow in MDC2_Update()
Alias: CVE-2016-6303
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1370147 1370148 1370149
Blocks: 1367347
TreeView+ depends on / blocked
Reported: 2016-08-25 12:07 UTC by Adam Mariš
Modified: 2021-09-13 19:48 UTC (History)
33 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2016-09-16 20:36:25 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 2662211 0 None None None 2016-09-28 00:43:40 UTC

Description Adam Mariš 2016-08-25 12:07:00 UTC
Possible integer overflow vulnerability was found in MDC2_Update() function that can lead to out-of-bounds write.

Upstream patch:


Comment 1 Adam Mariš 2016-08-25 12:07:50 UTC
Created openssl101e tracking bugs for this issue:

Affects: epel-5 [bug 1370149]

Comment 2 Adam Mariš 2016-08-25 12:08:05 UTC
Created openssl tracking bugs for this issue:

Affects: fedora-all [bug 1370147]

Comment 3 Adam Mariš 2016-08-25 12:08:16 UTC
Created mingw-openssl tracking bugs for this issue:

Affects: fedora-all [bug 1370148]

Comment 4 Tomas Hoger 2016-09-16 20:36:25 UTC
MDC-2 support is not enabled in OpenSSL packages in Red Hat products.  Therefore, this issue can not affect those packages.

Comment 5 Tomas Hoger 2016-09-20 20:25:35 UTC

Not vulnerable. This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 4, 5, 6, and 7, as they did not include support for MDC-2.

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