CVE-2020-26217

high-risk
Published 2020-11-16

XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.

Do I need to act?

!
93.0% chance of exploitation in next 30 days
EPSS score — higher than 7% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.0/10 High
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

Debian Apache Oracle Netapp Xstream

References (30)

Patch https://github.com/x-stream/xstream/commit/0fec095d534126931c99fd38e9c6d41f5c685...
Mitigation https://github.com/x-stream/xstream/security/advisories/GHSA-mw36-7c6c-q4q2
Issue Tracking https://lists.apache.org/thread.html/r2de526726e7f4db4a7cb91b7355070779f51a84fd9...
Issue Tracking https://lists.apache.org/thread.html/r7c9fc255edc0b9cd9567093d131f6d33fde4c662aa...
Issue Tracking https://lists.apache.org/thread.html/r826a006fda71cc96fc87b6eca4b5d195f19a292ad3...
Issue Tracking https://lists.apache.org/thread.html/redde3609b89b2a4ff18b536a06ef9a77deb93d47fd...
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00001.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20210409-0004/
Third Party Advisory https://www.debian.org/security/2020/dsa-4811
Patch https://www.oracle.com//security-alerts/cpujul2021.html
Patch https://www.oracle.com/security-alerts/cpuApr2021.html
Not Applicable https://www.oracle.com/security-alerts/cpuapr2022.html
Not Applicable https://www.oracle.com/security-alerts/cpujan2022.html
Patch https://www.oracle.com/security-alerts/cpuoct2021.html
Exploit https://x-stream.github.io/CVE-2020-26217.html
Patch https://github.com/x-stream/xstream/commit/0fec095d534126931c99fd38e9c6d41f5c685...
Mitigation https://github.com/x-stream/xstream/security/advisories/GHSA-mw36-7c6c-q4q2
Issue Tracking https://lists.apache.org/thread.html/r2de526726e7f4db4a7cb91b7355070779f51a84fd9...
Issue Tracking https://lists.apache.org/thread.html/r7c9fc255edc0b9cd9567093d131f6d33fde4c662aa...
Issue Tracking https://lists.apache.org/thread.html/r826a006fda71cc96fc87b6eca4b5d195f19a292ad3...
and 10 more references
68
/ 100
high-risk
Severity 24/34 · High
Exploitability 20/34 · Moderate
Exposure 24/34 · High