PT-2017-9219 · Microsoft · Crypto++

John Byrd · Published 2017-01-30 · Updated 2017-02-07 · CVE-2016-7544

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Crypto++ version 5.6.4

Description The issue arises from the incorrect usage of Microsoft's stack-based malloca and freea functions in the Crypto++ library. Specifically, when the library requests a block of memory to align a table, and if the table is later reallocated, it could lead to freeing the wrong pointer.

Recommendations For Crypto++ version 5.6.4, consider avoiding reallocation of tables that have been previously aligned in memory until a fix is available. As a temporary workaround, review and modify the memory allocation and deallocation code to correctly handle table reallocations and avoid freeing incorrect pointers.

Fix

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2016-7544

Affected Products

Crypto++

References · 7

• https://github.com/weidai11/cryptopp/issues/302 · Patch
• http://openwall.com/lists/oss-security/2016/09/23/9 · Patch
• http://openwall.com/lists/oss-security/2016/09/23/5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2016-7544 · Security Note
• https://cryptopp.com/release565.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7544 · Vendor Advisory
• http://securityfocus.com/bid/93164 · Note