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)