CVE-2020-26259
Publication date 16 December 2020
Last updated 22 August 2024
Ubuntu priority
Cvss 3 Severity Score
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling. The vulnerability may allow a remote attacker to delete arbitrary know files on the host as log as the executing process has sufficient rights 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 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.
Status
Package | Ubuntu Release | Status |
---|---|---|
libxstream-java | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 1.4.11.1-1ubuntu0.1
|
|
18.04 LTS bionic |
Fixed 1.4.11.1-1~18.04.1
|
|
16.04 LTS xenial |
Fixed 1.4.8-1ubuntu0.1+esm3
|
|
14.04 LTS trusty |
Fixed 1.4.7-1ubuntu0.1+esm2
|
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Get Ubuntu ProSeverity score breakdown
Parameter | Value |
---|---|
Base score | 6.8 · Medium |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Changed |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-4714-1
- XStream vulnerabilities
- 28 January 2021
- USN-4943-1
- XStream vulnerabilities
- 11 May 2021
- USN-6978-1
- XStream vulnerabilities
- 22 August 2024