CVE-2018-1000831
K9Mail version <= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response 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 (1.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
K9Mail version <= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.
- CVSS 3.0
- 10.0 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.91% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- k9mail/k-9 mail
- Source
- cve@mitre.org
References
- https://0dd.zone/2018/10/28/k9mail-XXE-MitM/Third Party Advisory
- https://github.com/k9mail/k-9/issues/3681Issue Tracking, Third Party Advisory
- https://0dd.zone/2018/10/28/k9mail-XXE-MitM/Third Party Advisory
- https://github.com/k9mail/k-9/issues/3681Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.