Multiple vulnerabilities in Cesanta Mongoose
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 8 |
| CVE-ID | CVE-2017-2891 CVE-2017-2892 CVE-2017-2893 CVE-2017-2894 CVE-2017-2895 CVE-2017-2909 CVE-2017-2921 CVE-2017-2922 |
| CWE-ID | CWE-416 CWE-20 CWE-476 CWE-121 CWE-125 CWE-835 CWE-119 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Mongoose Web applications / JS libraries |
| Vendor | Valenok |
Security Bulletin
This security bulletin contains information about 8 vulnerabilities.
1) Use-after-free error
EUVDB-ID: #VU9101
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2891
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to use-after-free error in the HTTP server implementation. A remote attacker can send an ordinary HTTP POST request with a CGI target, cause a reuse of previously freed pointer, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0398
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) Improper input validation
EUVDB-ID: #VU9102
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2892
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists in the MQTT packet parsing functionality due to improper input validation. A remote attacker can send a specially crafted MQTT packet over network to cause an arbitrary out-of-bounds memory read and write potentially resulting in information disclosure, denial of service and remote code execution.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0399
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) Null pointer dereference
EUVDB-ID: #VU9103
Risk: Low
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-2017-2893
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the MQTT packet parsing functionality due to improper input validation. A remote attacker can send a specially crafted MQTT SUBSCRIBE packet, trigger null pointer dereference and cause the server to crash.
Successful exploitation of the vulnerability results in denial of service.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0400
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.
4) Stack-based buffer overflow
EUVDB-ID: #VU9104
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2894
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to stack buffer overflow vulnerability exists in the MQTT packet parsing functionality. A remote attacker can send a specially crafted MQTT SUBSCRIBE packet, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0401
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.
5) Out-of-bounds read
EUVDB-ID: #VU9105
Risk: Low
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2895
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition on the target system.
The weakness exists in the MQTT packet parsing functionality due to out-of-bounds memory read. A remote attacker can send a specially crafted MQTT packet over network to cause an arbitrary out-of-bounds memory read and write potentially resulting in information disclosure and denial of service.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0402
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.
6) Infinite loop
EUVDB-ID: #VU9106
Risk: Low
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-2017-2909
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the DNS server functionality due to improper input validation. A remote attacker can send a specially crafted DNS request, trigger an infinite loop programming error, cause an infinite loop resulting in high CPU usage and the server crash.
Successful exploitation of the vulnerability results in denial of service.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0416
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.
7) Memory corruption
EUVDB-ID: #VU9107
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2921
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists in the Websocket protocol implementation due to boundary error. A remote attacker can send a specially crafted websocket packet over network to cause an an integer overflow leading to heap buffer overflow resulting in denial of service and potential remote code execution.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0428
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.
8) Use-after-free error
EUVDB-ID: #VU9108
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-2922
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists in the Websocket protocol implementation due to use-after-free error. A remote attacker can send a specially crafted websocket packet, cause a buffer to be allocated while leaving stale pointers, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 6.10.
Mongoose: 6.8
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0429
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.
