CVE-2021-39140

Impact

The vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.

Patches

XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

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-2021-39140.

Credits

The vulnerability was discovered and reported by Lai Han of nsfocus security team.

For more information

If you have any questions or comments about this advisory:

• Open an issue in XStream
• Contact us at XStream Google Group

XStream is a simple library to serialize objects to XML and back again. A high level facade is supplied that simplifies common use cases. Custom objects can be serialized without need for specifying mappings. Speed and low memory footprint are a crucial part of the design, making it suitable for large object graphs or systems with high message throughput. No information is duplicated that can be obtained via reflection. This results in XML that is easier to read for humans and more compact than native Java serialization. XStream serializes internal fields, including private and final. Supports non-public and inner classes. Classes are not required to have default constructor. Duplicate references encountered in the object-model will be maintained. Supports circular references. By implementing an interface, XStream can serialize directly to/from any tree structure (not just XML). Strategies can be registered allowing customization of how particular types are represented as XML. When an exception occurs due to malformed XML, detailed diagnostics are provided to help isolate and fix the problem.

Security Fix(es):

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39139)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39141)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39146)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39144)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39145)

XStream is a simple library to serialize objects to XML and back again. In…

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

TuxCare rebuilt com.thoughtworks.xstream:xstream to address 15 CVEs. Fixed in 1.4.17-tuxcare.1.

Multiple security vulnerabilities have been discovered in XStream. See references for details.

This update for xstream fixes the following issues:

• Upgrade to 1.4.18
• CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)
• CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)
• CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

This update for xstream fixes the following issues:

• Upgrade to 1.4.18
• CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)
• CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)
• CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)

This update for xstream fixes the following issues:

• Upgrade to 1.4.18
• CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)
• CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)
• CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)
• CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)
• CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)

Lai Han discovered that XStream incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-39140)

It was discovered that XStream incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-39139, CVE-2021-39141, CVE-2021-39144, CVE-2021-39145, CVE-2021-39146, CVE-2021-39147, CVE-2021-39148, CVE-2021-39149, CVE-2021-39151, CVE-2021-39153, CVE-2021-39154)

It was discovered that XStream incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-39150, CVE-2021-39152)

Lai Han discovered that XStream incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. (CVE-2022-41966)