Multiple vulnerabilities in ZNC



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-14055
CVE-2018-14056
CWE-ID CWE-20
CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ZNC
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor ZNC

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU14122

Risk: Low

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:Clear]

CVE-ID: CVE-2018-14055

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper validation of untrusted lines coming from the network. A remote unauthenticated attacker can supply specially crafted input to inject rogue values into znc.conf and gain elevated privileges.

Mitigation

Update to version 1.7.1.

Vulnerable software versions

ZNC: 1.0 - 1.7.0

CPE2.3 External links

https://github.com/znc/znc/commit/d22fef8620cdd87490754f607e7153979731c69d
https://github.com/znc/znc/commit/a7bfbd93812950b7444841431e8e297e62cb524e


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) Path traversal

EUVDB-ID: #VU14123

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14056

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to path traversal flaw when handling malicious input passed via ../ in a web skin name. A remote unauthenticated attacker can supply specially crafted input to  access files outside of the intended skins directories.

Mitigation

Update to version 1.7.1.

Vulnerable software versions

ZNC: 1.0 - 1.7.0

CPE2.3 External links

https://github.com/znc/znc/commit/a4a5aeeb17d32937d8c7d743dae9a4cc755ce773


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.



###SIDEBAR###