Multiple vulnerabilities in Espruino

Published: 2018-05-18

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-11591 CVE-2018-11592
CWE-ID	CWE-476 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Espruino Universal components / Libraries / Scripting languages
Vendor	Pur3 Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU14731

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-2018-11591

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in in jsvar.c. A remote attacker can trigger denial of service conditions via a NULL pointer dereference during syntax parsing.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Espruino: 1.44 - 1.97

External links

http://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4
http://github.com/espruino/Espruino/files/2015612/test.txt
http://github.com/espruino/Espruino/issues/1420

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.

2) Buffer over-read

EUVDB-ID: #VU14732

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11592

CWE-ID: CWE-125 - Out-of-bounds read