Multiple vulnerabilities in Netskope client service



Published: 2019-09-27
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-10882
CVE-2019-12091
CWE-ID CWE-121
CWE-78
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Netskope client
Client/Desktop applications / Software for archiving

Vendor Netskope

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU21394

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10882

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local user to cause a denial of service (DoS) attack on the target system.

The vulnerability exists due to a boundary error in the "doHandshakefromServer" function. A local authenticated user can trigger stack-based buffer overflow and crash the target application.

This vulnerability affects the following versions:

  • Netskope client v57 before 57.2.0.219
  • Netskope client v60 before 60.2.0.214

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Netskope client: before 60.2.0.214

External links

http://airbus-seclab.github.io/advisories/netskope.html
http://support.netskope.com/hc/article_attachments/360033003553/Sprint_62_Release_Notes.pdf
http://support.netskope.com/hc/en-us/articles/360014589894-Netskope-Client


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) OS Command Injection

EUVDB-ID: #VU21396

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-12091

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the connection handling function. A local authenticated user can execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

This vulnerability affects the following versions:

  • Netskope client v57 before 57.2.0.219
  • Netskope client v60 before 60.2.0.214

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Netskope client: before 60.2.0.214

External links

http://airbus-seclab.github.io/advisories/netskope.html
http://support.netskope.com/hc/article_attachments/360033003553/Sprint_62_Release_Notes.pdf
http://support.netskope.com/hc/en-us/articles/360014589894-Netskope-Client


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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