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CVE

GHSA-56p8-3fh9-4cvq

XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)
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CVE

GHSA-56p8-3fh9-4cvq

XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)

Impact

The vulnerability may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.

Patches

If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

Workarounds

See workarounds 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-2021-21348.

Credits

The vulnerability was discovered and reported by threedr3am.

For more information

If you have any questions or comments about this advisory:

Package Versions Affected

Package Version
patch Availability
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
Available
Unavailable
com.thoughtworks.xstream:xstream 1.4.7
Available
Unavailable
com.thoughtworks.xstream:xstream 1.4.10
Available
Unavailable
com.thoughtworks.xstream:xstream 1.4.9
Available
Unavailable

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
5.3
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Related Resources

No items found.

References

https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq, https://nvd.nist.gov/vuln/detail/CVE-2021-21348, https://github.com/x-stream/xstream, https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd@%3Cusers.activemq.apache.org%3E, https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0@%3Cdev.jmeter.apache.org%3E, https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html, https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP, https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7, https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB, https://security.netapp.com/advisory/ntap-20210430-0002, https://www.debian.org/security/2021/dsa-5004, https://www.oracle.com//security-alerts/cpujul2021.html, https://www.oracle.com/security-alerts/cpujan2022.html, https://www.oracle.com/security-alerts/cpuoct2021.html, https://x-stream.github.io/CVE-2021-21348.html, https://x-stream.github.io/security.html#workaround, http://x-stream.github.io/changes.html#1.4.16

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00199%
EPSS Percentile
0.42055%
Introduced Version
1.4.7,0.1
Fix Available
1.4.16

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