Out-of-bounds write in firefox-esr (Alpine package)

Published: 2020-09-03

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2017-13766
CWE-ID	CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	firefox-esr (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) Out-of-bounds write

EUVDB-ID: #VU8073

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13766

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to out-of-bounds write in the Profinet I/O dissector. A remote attacker can inject a malformed packet onto the wire, trigger Wireshark to consume excessive CPU resources and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 68.8.0-r0 - 68.9.0-r1

CPE2.3

External links

http://git.alpinelinux.org/aports/commit/?id=d181b0289ff7c32d371dcd976276672bbe2e7b72

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.