Vulnerability identifier: #VU7068

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7754

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Firefox ESR
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to out-of-bounds read in WebGL. A remote attacker can use a specially crafted ImageInfo object during WebGL operations and read arbitrary files.
 
Successful exploitation of the vulnerability results in information disclosure.

Mitigation
Update to version 52.2.

Vulnerable software versions

Firefox ESR: 52.0.1, 45.0 - 45.8, 38.0 - 38.8.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2017-16/

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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.