PT-2018-9555 · K 9 Mail · K-9 Mail

Published 2018-12-20 · Updated 2019-01-08 · CVE-2018-1000831

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions K9Mail versions prior to v5.601

Description The issue concerns a XML External Entity (XXE) vulnerability in the WebDAV response parser. This can lead to disclosure of confidential data, denial of service, Server-Side Request Forgery (SSRF), and port scanning. The attack is exploitable via a malicious WebDAV server or by intercepting the response of a valid WebDAV server.

Recommendations For versions prior to v5.601, update to version v5.601 or later to resolve the issue. As a temporary workaround, consider restricting access to WebDAV servers to minimize the risk of exploitation. Avoid using potentially malicious WebDAV servers until the issue is resolved.

Fix

XXE

Weakness Enumeration

CWE-611

Related Identifiers

CVE-2018-1000831

Affected Products

K-9 Mail

References · 4

• https://osv.dev/vulnerability/CVE-2018-1000831 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000831 · Security Note
• https://github.com/k9mail/k-9/issues/3681 · Note
• https://0dd.zone/2018/10/28/k9mail-XXE-MitM · Note