Vulnerability · Published Feb 9, 2021 · Assigned by siemens

CVE-2020-25237

High 8.1

In plain English

A high-severity path traversal in SINEC NMS from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 20.6% (higher than 98% of all known vulnerabilities).

Severity (CVSS NVD)8.1High

Exploit odds (30 days)20.6%top 2.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1 Update 1), SINEMA Server (All versions < V14.0 SP2 Update 2). When uploading files to an affected system using a zip container, the system does not correctly check if the relative file path of the extracted files is still within the intended target directory. With this an attacker could create or overwrite arbitrary files on an affected system. This type of vulnerability is also known as 'Zip-Slip'. (ZDI-CAN-12054)

Affected products (as reported)

Vendor	Product	Versions
Siemens	SINEC NMS	All versions < V1.0 SP1 Update 1
Siemens	SINEMA Server	All versions < V14.0 SP2 Update 2

Weakness: CWE-22

References

https://cert-portal.siemens.com/productcert/pdf/ssa-156833.pdf x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-03 x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-21-253/ x_refsource_MISC