CVE-2016-9939: n/a vulnerability

CVE-2016-9939: Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine.

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 03:07 UTC (UTC+00:00)

Security readout for executives and security teams

Crypto++ 5.6.4 could be forced into allocating and wiping a very large memory block while decoding a malformed ASN.1 BER object. The practical business risk is service slowdown or denial of service in systems that parse untrusted ASN.1 data with this library. Exposure is most likely in applications or packaged systems using Crypto++/cryptopp/libcrypto++ 5.6.4 to parse ASN.1 BER data supplied by users, peers, files, or network services. The source bundle does not identify specific downstream products. Treat this as an availability-risk cleanup item. Prioritize internet-facing or business-critical services that parse external ASN.1 data with Crypto++ 5.6.4, but the provided evidence does not justify emergency response language. Mitigation focus: Inventory systems and applications using Crypto++ 5.6.4 or libcrypto++ packages.; Apply relevant vendor or distribution security updates, including Debian and Fedora guidance where applicable.; Limit untrusted ASN.1 BER parsing where business functionality allows..

Prepared: Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 30, 2017, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

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2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
FEDORA-2019-812b77ed2eCVE reference · vendor-advisory, x_refsource_FEDORA

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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