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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2021-39150

In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8.

HIGH 8.5EPSS 3.44%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.

CVSS 3.1
8.5 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS
3.44% probability · 88th percentile
CISA KEV
Not listed
Weakness
CWE-502, CWE-918
Affected
xstream/xstream · fedoraproject/fedora · debian/debian linux · netapp/snapmanager · oracle/business activity monitoring · oracle/commerce guided search · oracle/communications billing and revenue management elastic charging engine · oracle/communications cloud native core automated test suite · oracle/communications cloud native core binding support function · oracle/communications cloud native core policy · oracle/communications unified inventory management · oracle/retail xstore point of service · oracle/utilities framework · oracle/utilities testing accelerator · oracle/webcenter portal
Source
security-advisories@github.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.