Vulnerability Details : CVE-2018-1000836
bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.
Vulnerability category: XML external entity (XXE) injectionServer-side request forgery (SSRF) Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2018-1000836
Probability of exploitation activity in the next 30 days: 0.16%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 51 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-1000836
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
|
9.0
|
CRITICAL | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
2.2
|
6.0
|
NIST |
CWE ids for CVE-2018-1000836
-
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-1000836
-
https://github.com/Bedework/bw-calendar-engine/issues/3
XXE via MitM / Malicious Server in IscheduleClient · Issue #3 · Bedework/bw-calendar-engine · GitHubThird Party Advisory
-
https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/
BW Calendar Engine XXE | 0dd - The Zero (0) Day DivisionThird Party Advisory
Products affected by CVE-2018-1000836
- cpe:2.3:a:apereo:bw-calendar-engine:*:*:*:*:*:*:*:*