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CVE-2016-9939 Details

Description

Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine. The library will allocate a memory block based on the length field of the ASN.1 object. If there is not enough content octets in the ASN.1 object, then the function will fail and the memory block will be zeroed even if its unused. There is a noticeable delay during the wipe for a large allocation.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7IL5A6465IEPW5GAWGXB2ENJPFYVWTJM/	CVE
http://www.debian.org/security/2016/dsa-3748	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/12/12/7	CVE	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/94854	CVE	Third Party AdvisoryVDB Entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7IL5A6465IEPW5GAWGXB2ENJPFYVWTJM/	[email protected]
http://www.debian.org/security/2016/dsa-3748	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/12/12/7	[email protected]	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/94854	[email protected]	Third Party AdvisoryVDB Entry

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
cryptopp crypto++	5.6.4
CPE cpe:2.3:a:cryptopp:crypto++:5.6.4:::::::* Remediation No remediation found in references.
debian debian linux	8.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jun 1, 2019	CVE Modified	[email protected]
Feb 7, 2017	Initial Analysis	[email protected]
Feb 1, 2017	CVE Modified	[email protected]