CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.0 | $0-$5k | 0.00 |
A vulnerability classified as problematic has been found in Mattermost up to 3.5.1. Affected is an unknown code block of the file /error. The manipulation with an unknown input leads to a cross site scripting vulnerability (Reflected). CWE is classifying the issue as CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. This is going to have an impact on integrity.
The bug was discovered 12/02/2016. The weakness was released 01/18/2017 by Julien Ahrens as [RCESEC-2016-012] Mattermost <= 3.5.1 "/error" Unauthenticated Reflected Cross-Site Scripting / Content Injection as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.
The vulnerability was handled as a non-public zero-day exploit for at least 45 days. During that time the estimated underground price was around $0-$5k.
Upgrading to version 3.6.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.3VulDB Meta Temp Score: 4.0
VulDB Base Score: 4.3
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
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: 🔍
Exploiting
Name: ReflectedClass: Cross site scripting / Reflected
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Upgrade: Mattermost 3.6.0
Timeline
12/02/2016 🔍12/02/2016 🔍
12/12/2016 🔍
01/16/2017 🔍
01/18/2017 🔍
01/27/2017 🔍
08/04/2020 🔍
Sources
Advisory: [RCESEC-2016-012] Mattermost <= 3.5.1 "/error" Unauthenticated Reflected Cross-Site Scripting / Content InjectionResearcher: Julien Ahrens
Status: Not defined
Entry
Created: 01/27/2017 14:01Updated: 08/04/2020 10:02
Changes: 01/27/2017 14:01 (46), 08/04/2020 10:02 (1)
Complete: 🔍
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