#VU13555 Memory leak in Mozilla Thunderbird


Published: 2018-07-04

Vulnerability identifier: #VU13555

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-2018-12373

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Thunderbird
Client/Desktop applications / Messaging software

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to dDecrypted S/MIME parts hidden with CSS or <plaintext> can leak plaintext when included in a HTML reply/forward. A remote attacker can trigger memory leak and gain access to arbitrary data.

Mitigation
Update to version 59.2.

Vulnerable software versions

Mozilla Thunderbird: 52.8


External links
http://www.mozilla.org/en-US/security/advisories/mfsa2018-18/


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.


Latest bulletins with this vulnerability