Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow.
Published 2016-09-02 14:59:06
Updated 2019-02-09 11:29:01
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Overflow

Products affected by CVE-2016-5636

Threat overview for CVE-2016-5636

Top countries where our scanners detected CVE-2016-5636
Top open port discovered on systems with this issue 8123
IPs affected by CVE-2016-5636 139,029
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2016-5636

1.61%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 87 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-5636

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
10.0
HIGH AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
NIST
9.8
CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2016-5636

  • The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-5636

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