Debian update for mosquitto



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7650
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU6840

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7650

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to improper handling of usernames, containing ‘#’ or ‘+’ characters, within pattern based ACLs. A remote attacker can create a specially crafted username and bypass implemented security mechanisms.

Mitigation

Update the affected package to version 1.3.4-2+deb8u1 or 1.4.10-3.

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://www.debian.org/security/2017/dsa-3865


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.

Is there known malware, which exploits this vulnerability?

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



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