Debian update for bind9
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2017-3136 CVE-2017-3137 CVE-2017-3138 |
| CWE-ID | CWE-617 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
bind9 (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Assertion failure
EUVDB-ID: #VU16152
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-3136
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the servers are configured to use DNS64 and if the option "break-dnssec yes;" is in use. A remote attacker can supply specially crafted queries, if it was configured to use the DNS64 feature and other preconditions were met, trigger a server using DNS64 assertion failure and cause the service to crash.
MitigationUpdate bind9 package to one of the following versions: 1:9.9.5.dfsg-9+deb8u11, 1:9.10.3.dfsg.P4-12.3.
Vulnerable software versionsbind9 (Debian package): 1:9.9.5.dfsg-9+deb8u5 - 1:9.9.5.dfsg-9+deb8u9
External linkshttp://www.debian.org/security/2017/dsa-3854
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) Assertion failure
EUVDB-ID: #VU7227
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-3137
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when processing query response containing CNAME or DNAME resource records in an unusual order in BIND. A remote attacker can trigger assertion failure and crash BIND application.
Update bind9 package to one of the following versions: 1:9.9.5.dfsg-9+deb8u11, 1:9.10.3.dfsg.P4-12.3.
Vulnerable software versionsbind9 (Debian package): 1:9.9.5.dfsg-9+deb8u5 - 1:9.9.5.dfsg-9+deb8u9
External linkshttp://www.debian.org/security/2017/dsa-3854
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) Assertion failure
EUVDB-ID: #VU16151
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-3138
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to named contains a feature which allows operators to issue commands to a running server by communicating with the server process over a control channel, using a utility program such as rndc.. A remote attacker can send some versions of named a null command string, trigger a REQUIRE assertion failure and cause the service to crash.
Update bind9 package to one of the following versions: 1:9.9.5.dfsg-9+deb8u11, 1:9.10.3.dfsg.P4-12.3.
Vulnerable software versionsbind9 (Debian package): 1:9.9.5.dfsg-9+deb8u5 - 1:9.9.5.dfsg-9+deb8u9
External linkshttp://www.debian.org/security/2017/dsa-3854
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.
