Security restrictions bypass in IBM AIX
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2016-3142 CVE-2016-3143 CVE-2017-3142 CVE-2017-3143 |
| CWE-ID | CWE-264 CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #4 is available. |
| Vulnerable software Subscribe |
IBM AIX Operating systems & Components / Operating system ISC BIND Server applications / DNS servers |
| Vendor |
IBM Corporation ISC |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Security restrictions bypass
EUVDB-ID: #VU4447
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-3142
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. A remote attacker can send a specially crafted request packet, bypass TSIG authentication on AXFR requests and transfer the target zone.
The vulnerability is addressed in the following versions: 6.1.9.7, 6.1.9.8, 6.1.9.9, 7.1.3.7, 7.1.3.8, 7.1.3.9.
IBM AIX: 6.1.0 - 7.1.4
External linkshttp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
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.
2) Security restrictions bypass
EUVDB-ID: #VU8007
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-3143
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. A remote attacker can send a specially crafted request packet, bypass TSIG authentication on AXFR requests and manipulate BIND into accepting an unauthorized dynamic update.
The vulnerability is addressed in the following versions: 6.1.9.7, 6.1.9.8, 6.1.9.9, 7.1.3.7, 7.1.3.8, 7.1.3.9.
IBM AIX: 6.1.0 - 7.1.4
External linkshttp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
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.
3) Security restrictions bypass
EUVDB-ID: #VU7257
Risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-3142
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error in TSIG authentication of AXFR and NOTIFY requests. A remote attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name can send specially crafted request packet, bypass authentication and perform unauthorized zone transfers.
The vulnerability is addressed in the following versions:
9.9.10-P2, 9.10.5-P2, 9.11.1-P2, 9.9.10-S3, 9.10.5-S3.
ISC BIND: 9.4.0 - 9.11.1-P1
External linkshttp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
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.
4) Security restrictions bypass
EUVDB-ID: #VU7258
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-3143
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error in TSIG authentication of AXFR requests. A remote attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name can send specially crafted request packet, manipulate the malicious zone content and accept unauthorized dynamic updates.
The vulnerability is addressed in the following versions:
9.9.10-P2, 9.10.5-P2, 9.11.1-P2, 9.9.10-S3, 9.10.5-S3.
ISC BIND: 9.4.0 - 9.11.1-P1
External linkshttp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
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. However, proof of concept for this vulnerability is available.
