A flaw was found in the bash functionality that evaluates specially formatted environment variables passed to it from another environment. An attacker could use this feature to override or bypass restrictions to the environment to execute shell commands before restrictions have been applied. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.

Acknowledgements:

Red Hat would like to thank Stephane Chazelas for reporting this issue.

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the modcgi and modcgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271.

Cross-site request forgery (CSRF) vulnerability in IBM Security QRadar SIEM and QRadar Risk Manager 7.1 before MR2 Patch 9 and 7.2 before 7.2.4 Patch 1, and QRadar Vulnerability Manager 7.2 before 7.2.4 Patch 1, allows remote attackers to hijack the authentication of arbitrary users for requests that insert XSS sequences.

IBM Security QRadar SIEM 7.2 and 7.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 134814.

IBM Security QRadar SIEM and QRadar Risk Manager 7.1 before MR2 Patch 9 and 7.2 before 7.2.4 Patch 1, and QRadar Vulnerability Manager 7.2 before 7.2.4 Patch 1, allow remote attackers to hijack sessions via unspecified vectors.

IBM Security QRadar SIEM and QRadar Risk Manager 7.1 before MR2 Patch 9 and 7.2 before 7.2.4 Patch 1, and QRadar Vulnerability Manager 7.2 before 7.2.4 Patch 1, place credentials in URLs, which allows remote attackers to obtain sensitive information by reading (1) web-server access logs, (2) web-server Referer logs, or (3) the browser history.

IBM Security QRadar SIEM and QRadar Risk Manager 7.1 before MR2 Patch 9 and 7.2 before 7.2.4 Patch 1, and QRadar Vulnerability Manager 7.2 before 7.2.4 Patch 1, allow remote attackers to obtain sensitive cookie information by sniffing the network during an HTTP session.