CVE-2021-21342
CVSS v3
9.1
CRITICAL
Score EPSS
1.0 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. 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, you will have to use at least version 1.4.16.
Détails techniques
- Publiée le
- 2021-03-23
Questions fréquentes
Qu’est-ce que CVE-2021-21342 ?
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. 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, you will have to use at least version 1.4.16.
CVE-2021-21342 est-elle activement exploitée ?
Aucune exploitation active de CVE-2021-21342 n’est confirmée. Le score EPSS est de 1.0 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2021-21342 ?
CVE-2021-21342 a un score de base CVSS v3 de 9.1 (gravité CRITICAL).
CVE-2021-21342 touche-t-elle votre environnement ?
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Autres vulnérabilités 2021 à trier
Classées par probabilité d’exploitation (EPSS).