PT-2020-15185 · Apache · Apache Shardingsphere

Published 2020-03-11 · Updated 2022-02-10 · CVE-2020-1947

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Apache ShardingSphere(incubator) versions 4.0.0-RC3 through 4.0.0

Description The ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows unmarshalling data to a Java type by using the YAML tag. Unmarshalling untrusted data can lead to security flaws of Remote Code Execution (RCE).

Recommendations For Apache ShardingSphere(incubator) versions 4.0.0-RC3 through 4.0.0, consider disabling the use of the SnakeYAML library for parsing YAML inputs until a patch is available. Restrict access to the web console to minimize the risk of exploitation. Avoid using untrusted YAML inputs in the datasource configuration until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2020-1947

GHSA-V54F-XCMP-43CR

Affected Products

Apache Shardingsphere

References · 7

• 🔥 https://github.com/jas502n/CVE-2020-1947 · Exploit
• 🔥 https://github.com/wsfengfan/CVE-2020-1947 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-1947 · Security Note
• https://osv.dev/vulnerability/CVE-2020-1947 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-v54f-xcmp-43cr · Vendor Advisory
• https://lists.apache.org/thread.html/r4a61a24c119bd820da6fb02100d286f8aae55c8f9b94a346b9bb27d8%40%3Cdev.shardingsphere.apache.org%3E · Vendor Advisory
• https://t.me/cvenotify/1524 · Telegram Post