RCE in Apache Kylin
CVE-2020-1956
Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.973 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.973 · newest: 0.973 · change: 0.000
Affected products
- Apache Kylin — versions 2.3.0, 2.4.0, <=2.6.5
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/r1332ef34cf8e2c0589cf44ad269fb1fb4c06addec6297f032… (Mailing List, Mitigation, Vendor Advisory)
- community.sonarsource.com/t/apache-kylin-3-0-1-command-injection-vulnerability/… (Exploit, Third Party Advisory)
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4b… (mailing-list, Mailing List)
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4b… (mailing-list, Mailing List)
- lists.apache.org/thread.html/r61666760d8a4e8764b2d5fe158d8a48b569414480fbfadede… (mailing-list, Patch, Mailing List)
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4b… (mailing-list, Mailing List)
- www.openwall.com/lists/oss-security/2020/07/14/1 (mailing-list, Mailing List)
- lists.apache.org/thread.html/r021baf9d8d4ae41e8c8332c167c4fa96c91b5086563d9be55… (mailing-list, Patch, Mailing List)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory, US Government Resource)
Frequently asked questions
- What is CVE-2020-1956?
- CVE-2020-1956 is a high-severity vulnerability in Apache Kylin, classified under OS Command Injection. CVSS score: 8.8/10. Published 2020-05-22.
- How severe is CVE-2020-1956?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-1956 known to be exploited?
- Yes. CVE-2020-1956 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 22 public proof-of-concept repositories are indexed.