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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.0 CRITICALCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.13% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- apereo/bw-calendar-engine
- Source
- cve@mitre.org
References
- https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/Third Party Advisory
- https://github.com/Bedework/bw-calendar-engine/issues/3Third Party Advisory
- https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/Third Party Advisory
- https://github.com/Bedework/bw-calendar-engine/issues/3Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.