Multiple vulnerabilities in Suricata



| Updated: 2020-08-08
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-10053
CVE-2019-10050
CWE-ID CWE-191
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Open Information Security Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer underflow

EUVDB-ID: #VU35905

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-10053

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the function SSHParseBanner is composed only of a character, then the program runs into a heap-based buffer over-read. This occurs because the erroneous search for results in an integer underflow.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Suricata: 4.1.0 - 4.1.3

CPE2.3 External links

https://lists.openinfosecfoundation.org/pipermail/oisf-announce/
https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application 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) Out-of-bounds read

EUVDB-ID: #VU35906

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10050

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

Exploit availability: No

Description

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

The vulnerability exists due to length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash. A remote attacker can perform a denial of service attack.

Mitigation

Update to version 4.1.4.

Vulnerable software versions

Suricata: 4.0.0 - 4.1.3

CPE2.3 External links

https://lists.openinfosecfoundation.org/pipermail/oisf-announce/
https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application 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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