Upstream information

CVE-2020-26258 at MITRE


XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, a Server-Side Forgery Request vulnerability can be activated when unmarshalling. The vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.15. The reported vulnerability does not exist if running Java 15 or higher. No user is affected who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still want to use XStream default blacklist can use a workaround described in more detailed in the referenced advisories.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5
Vector AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.7 4.3
Access Vector Network Network
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Changed Unchanged
Confidentiality Impact High Low
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1180146 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Module for Development Tools 15 SP2
  • xstream >= 1.4.15-3.3.2
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • xstream >= 1.4.15-3.3.2
  • xstream-benchmark >= 1.4.15-3.3.2
  • xstream-javadoc >= 1.4.15-3.3.2
  • xstream-parent >= 1.4.15-3.3.2
openSUSE Leap 15.2
  • xstream >= 1.4.15-lp152.2.3.1
  • xstream-benchmark >= 1.4.15-lp152.2.3.1
  • xstream-javadoc >= 1.4.15-lp152.2.3.1
  • xstream-parent >= 1.4.15-lp152.2.3.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise 15-SP2 Module for Development Tools xstream Released
SUSE Manager Server 4.0 Module xstream Affected
SUSE Manager Server 4.1 Module xstream Affected