CVE-2016-4537
Published: 6 May 2016
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 accepts a negative integer for the scale argument, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.
Notes
| Author | Note |
|---|---|
| sbeattie | fixed in 7.0.6, 5.6.21, 5.5.35 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
php5 Launchpad, Ubuntu, Debian |
precise |
Released
(5.3.10-1ubuntu3.23)
|
| trusty |
Released
(5.5.9+dfsg-1ubuntu4.17)
|
|
| upstream |
Released
(5.6.21+dfsg-1)
|
|
| wily |
Released
(5.6.11+dfsg-1ubuntu3.4)
|
|
| xenial |
Does not exist
|
|
|
Patches: upstream: https://git.php.net/?p=php-src.git;a=commit;h=d650063a0457aec56364e4005a636dc6c401f9cd |
||
|
php7.0 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(7.0.6-1)
|
|
| wily |
Does not exist
|
|
| xenial |
Released
(7.0.4-7ubuntu2.1)
|
|
|
Patches: upstream: https://git.php.net/?p=php-src.git;a=commit;h=d650063a0457aec56364e4005a636dc6c401f9cd |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |