Integer underflow in php7 (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2016-10166 |
| CWE-ID | CWE-191 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
php7 (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Integer underflow
EUVDB-ID: #VU7574
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-10166
CWE-ID:
CWE-191 - Integer underflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack and potentially compromise vulnerable system.
The vulnerability exists due to integer underflow when decrementing the "u" variable in _gdContributionsAlloc() function in gd_interpolation.c. A remote attacker create a specially crafted image file, trigger memory corruption and crash the affected application or execute arbitrary code on the target system.
Install update from vendor's website.
Vulnerable software versionsphp7 (Alpine package): 7.1.9-r0 - 7.1.17-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=195c4dea4525cc85ef4ab449d2c739b6b5081b48
http://git.alpinelinux.org/aports/commit/?id=d42b915a2245405763bb485ededfbdb01393f109
http://git.alpinelinux.org/aports/commit/?id=1b8dc16a8d83cea1a0638ca75a327f234049e6fd
http://git.alpinelinux.org/aports/commit/?id=08114de6e0da35db211984405c8d9043e426ea58
http://git.alpinelinux.org/aports/commit/?id=87a5a2c48f6c4e068c31ba4ba9665d05a4a88682
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
