Cohu 3960HD Firmware Upgrade postinstall.sh webupgrade unrestricted upload
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.8 | $0-$5k | 0.00 |
A vulnerability, which was classified as very critical, has been found in Cohu 3960HD (unknown version). This issue affects the function webupgrade
of the file postinstall.sh of the component Firmware Upgrade Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
The webupgrade function on the Cohu 3960HD does not verify the firmware upgrade files or process, allowing an attacker to upload a specially crafted postinstall.sh file that will be executed with "root" privileges.
The bug was discovered 05/12/2017. The weakness was presented 11/22/2017 (Website). The advisory is shared at bneg.io. The identification of this vulnerability is CVE-2017-8862 since 05/09/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/09/2019). MITRE ATT&CK project uses the attack technique T1608.002 for this issue.
The vulnerability was handled as a non-public zero-day exploit for at least 194 days. During that time the estimated underground price was around $0-$5k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
See 109791, 109792, 109794 and 109795 for similar entries.
Product
Vendor
Name
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 9.8
VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Unrestricted uploadCWE: CWE-434 / CWE-284 / CWE-266
ATT&CK: T1608.002
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
OpenVAS ID: 841345
OpenVAS Name: Cohu 3960HD Multiple Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
05/09/2017 🔍05/12/2017 🔍
11/22/2017 🔍
11/22/2017 🔍
11/22/2017 🔍
12/09/2019 🔍
Sources
Advisory: bneg.ioStatus: Not defined
CVE: CVE-2017-8862 (🔍)
See also: 🔍
Entry
Created: 11/22/2017 15:13Updated: 12/09/2019 13:48
Changes: 11/22/2017 15:13 (62), 12/09/2019 13:48 (1)
Complete: 🔍
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