Vulnerability identifier: #VU36925

Vulnerability risk: Medium

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-2018-13863

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
js-bson
Web applications / JS libraries

Vendor: MongoDB, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regular Expression Denial of Service (ReDoS) in lib/bson/decimal128.js. The flaw is triggered when the Decimal128.fromString() function is called to parse a long untrusted string.

Mitigation
Install update from vendor's website.

Vulnerable software versions

js-bson: 0.5.0 - 1.0.4

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External links
http://github.com/mongodb/js-bson/commit/bd61c45157c53a1698ff23770160cf4783e9ea4a
http://snyk.io/vuln/npm:bson:20180225

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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.