CVE-2016-4538
The MITRE CVE dictionary describes this issue as:
The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 modifies certain data structures without considering whether they are copies of the _zero_, _one_, or _two_ global variable, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.
Find out more about CVE-2016-4538 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS v2 metrics
| Base Score | 2.6 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:N/I:P/A:N |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| 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 |
Affected Packages State
| 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 |
CVE description copyright © 2017, The MITRE Corporation