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CVE-2018-16792: Solarwinds Sftp/Scp Server: XML external entity injection
CVE-2018-16792 is rated critical with a CVSS v3.1 base score of 9.1 and affects Solarwinds Sftp/Scp Server. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.
Vulnerability description
SolarWinds SFTP/SCP server through 2018-09-10 is vulnerable to XXE via a world readable and writable configuration file that allows an attacker to exfiltrate data.
Severity breakdown
CVSS v3.1 9.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: None. No effect on availability.
Underlying weakness
CWE-611: Improper Restriction of XML External Entity Reference
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.
Affected products
- Solarwinds Sftp/Scp Server: up to and including 2018-09-10