spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-5771 from the MITRE CVE dictionary dictionary and NIST NVD.
Base Score | 6.8 |
---|---|
Base Metrics | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Access Vector | Network |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Partial |
Integrity Impact | Partial |
Availability Impact | Partial |
CVSS3 Base Score | 5.6 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
Attack Vector | Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity Impact | Low |
Availability Impact | Low |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Errata | Release Date |
---|---|---|
Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-php56-php) | RHSA-2016:2750 | 2016-11-15 |
Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-php56-php) | RHSA-2016:2750 | 2016-11-15 |
Platform | Package | State |
---|---|---|
Red Hat Software Collections for Red Hat Enterprise Linux | php55-php | Will not fix |
Red Hat Software Collections for Red Hat Enterprise Linux | php54-php | Will not fix |
Red Hat Enterprise Linux 7 | php | Will not fix |
Red Hat Enterprise Linux 6 | php | Will not fix |
Red Hat Enterprise Linux 5 | php53 | Will not fix |
Red Hat Enterprise Linux 5 | php | Will not fix |