CVE-2016-4538

2016-05-0600:00:00

ubuntu.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.036 Low

EPSS

Percentile

91.5%

JSON

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.

Bugs

<https://bugs.php.net/bug.php?id=72093>

Notes

Author	Note
sbeattie	Fixed in 7.0.6, 5.6.21, 5.5.35
mdeslaur	same commit as CVE-2016-4537

OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchphp5< 5.3.10-1ubuntu3.23UNKNOWN
ubuntu14.04noarchphp5< 5.5.9+dfsg-1ubuntu4.17UNKNOWN
ubuntu15.10noarchphp5< 5.6.11+dfsg-1ubuntu3.4UNKNOWN
ubuntu16.04noarchphp7.0< 7.0.4-7ubuntu2.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	12.04	noarch	php5	< 5.3.10-1ubuntu3.23	UNKNOWN
ubuntu	14.04	noarch	php5	< 5.5.9+dfsg-1ubuntu4.17	UNKNOWN
ubuntu	15.10	noarch	php5	< 5.6.11+dfsg-1ubuntu3.4	UNKNOWN
ubuntu	16.04	noarch	php7.0	< 7.0.4-7ubuntu2.1	UNKNOWN