php_zip.c in the zip extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data containing a ZipArchive object.
Published 2016-08-07 10:59:22
Updated 2018-01-05 02:31:04
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionExecute codeDenial of service

Threat overview for CVE-2016-5773

Top countries where our scanners detected CVE-2016-5773
Top open port discovered on systems with this issue 80
IPs affected by CVE-2016-5773 149,261
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2016-5773

Probability of exploitation activity in the next 30 days: 6.33%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 93 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-5773

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
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-2016-5773

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-5773

Products affected by CVE-2016-5773

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