Debian update for knot



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-11104
CWE-ID CWE-287
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Authentication bypass

EUVDB-ID: #VU7550

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-11104

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to a flaw in the TSIG protocol implementation. A remote attacker can use a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set.

Mitigation

Update the affected package to version: 1.6.0-1+deb8u1, 2.4.0-3+deb9u1.

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://www.debian.org/security/2017/dsa-3910


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. However, proof of concept for this vulnerability is available.



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