CVE-2016-5769
Published: 24 June 2016
Multiple integer overflows in mcrypt.c in the mcrypt extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allow remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted length value, related to the (1) mcrypt_generic and (2) mdecrypt_generic functions.
Notes
| Author | Note |
|---|---|
| seth-arnold | The fix relies upon signed multiplication turning into negative numbers. Since this is undefined in C, the fix doesn't feel complete or or correct to me. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
php5 Launchpad, Ubuntu, Debian |
precise |
Released
(5.3.10-1ubuntu3.24)
|
| trusty |
Released
(5.5.9+dfsg-1ubuntu4.19)
|
|
| upstream |
Released
(5.6.23)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Does not exist
|
|
|
Patches: upstream: http://git.php.net/?p=php-src.git;a=commit;h=6c5211a0cef0cc2854eaa387e0eb036e012904d0 |
||
|
php7.0 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(7.0.8)
|
|
| wily |
Does not exist
|
|
| xenial |
Released
(7.0.8-0ubuntu0.16.04.1)
|
|
|
Patches: upstream: http://git.php.net/?p=php-src.git;a=commit;h=6c5211a0cef0cc2854eaa387e0eb036e012904d0 |
||
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 |