Information disclosure in php7 (Alpine package)



Published: 2017-09-29
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7890
CWE-ID CWE-200
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 low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU11789

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-7890

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists in the GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c due to it does not zero colorMap arrays before use. A remote attacker can trick the victim into opening a specially crafted GIF image that could use the uninitialized tables to read ~700 bytes from the top of the stack and gain access to potentially sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

php7 (Alpine package): 7.1.9-r1


CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=fa666308ab37b32d9aef124a737b59ebd06a1f7a
http://git.alpinelinux.org/aports/commit/?id=c77ede20873cee5072a80b7d96cfdd045cc1bc7f
http://git.alpinelinux.org/aports/commit/?id=d6da87295c4d40896255b08ee5b73d8199e352cb
http://git.alpinelinux.org/aports/commit/?id=0dfd5e85b10c2aba69314b961c7023dcce1d1514
http://git.alpinelinux.org/aports/commit/?id=2163755a312b6f196914d74c863dcc8edfb81e0b

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###