Fedora 24 update for bind99



| Updated: 2025-04-24
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2016-6170
CVE-2016-8864
CWE-ID CWE-233
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

bind99
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) AXFR/IXFR response processing flaw in BIND

EUVDB-ID: #VU103

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-6170

CWE-ID: CWE-233 - Improper Handling of Parameters

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause the target service to crash.

The vulnerability exists due to resource error in BIND. A remote primary DNS server can cause the target secondary DNS server to crash by sending a specially crafted AXFR response or IXFR response. A remote unauthenticated attacker may be able to send a specially crafted UPDATE message to cause the target server to crash.

Successful exploitation of this vulnerability may result in denial of service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 24

bind99: before 9.9.9-4.P4.fc24

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2016-9417b4c1dc


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Denial of service

EUVDB-ID: #VU1132

Risk: Low

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:Clear]

CVE-ID: CVE-2016-8864

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness is due to imptoper input validation. By returning a recursive response containing a specially crafted DNAME answer, a remote attacker can trigger a flaw in 'db.c' or 'resolver.c' and cause the target resolver to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 24

bind99: before 9.9.9-4.P4.fc24

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2016-9417b4c1dc


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.



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