Memory leak in firefox-esr (Alpine package)

1) Memory leak

EUVDB-ID: #VU18559

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11694

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in Windows sandbox where an uninitialized value in memory can be leaked to a renderer from a broker when making a call to access an otherwise unavailable file.. A remote attacker can create a specially crafted web page and gain access to sensitive information stored in memory on the system.

Note: the vulnerability affects Windows versions of Firefox.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 60.4.0-r0 - 60.6.2-r0

External links

http://git.alpinelinux.org/aports/commit/?id=19d91779a5cd79292c972f6acdf04ef87ed7379e
http://git.alpinelinux.org/aports/commit/?id=5d004d13d3cfbb28cda2846e1c88900d5a8d1040

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.