CVE-2016-9939

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 5.92% Top 10%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/12/12/7 mailing list third party advisory patch
http://www.debian.org/security/2016/dsa-3748 third party advisory vendor advisory
http://www.securityfocus.com/bid/94854 vdb entry third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7IL5A6465IEPW5GAWGXB2ENJPFYVWTJM/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9939?
CVE-2016-9939 has been scored as a high severity vulnerability.
How to fix CVE-2016-9939?
To fix CVE-2016-9939, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9939 being actively exploited in the wild?
It is possible that CVE-2016-9939 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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