CVE-2021-39140 – com.thoughtworks.xstream:xstream

Package

Manager: maven
Name: com.thoughtworks.xstream:xstream
Vulnerable Version: >=0 <1.4.18

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00118 pctl0.3131

Details

XStream can cause a Denial of Service ### Impact The vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-39140](https://x-stream.github.io/CVE-2021-39140.html). ### Credits The vulnerability was discovered and reported by Lai Han of nsfocus security team. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)

Metadata

Created: 2021-08-25T14:48:39Z
Modified: 2022-02-08T20:59:06Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-6wf9-jmg9-vxcc/GHSA-6wf9-jmg9-vxcc.json
CWE IDs: ["CWE-502", "CWE-835"]
Alternative ID: GHSA-6wf9-jmg9-vxcc
Finding: F096
Auto approve: 1