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.

IBM Spectrum Virtualize 8.3.1 could allow a remote user authenticated via LDAP to escalate their privileges and perform actions they should not have access to. IBM X-Force ID: 186678.

The management GUI on the IBM SAN Volume Controller and Storwize V7000 6.x before 6.4.1.3 allows remote attackers to bypass authentication and obtain superuser access via IP packets.

IBM SAN Volume Controller; Storwize V3500, V3700, V5000, and V7000; and Flex System V7000 with software 6.3 and 6.4 before 6.4.1.8, and 7.1 and 7.2 before 7.2.0.3, allow remote attackers to obtain CLI access, and consequently cause a denial of service, via unspecified traffic to the administrative IP address.

IBM Storwize 3500, 3700, 5000, and 7000 devices and SAN Volume Controller 6.x and 7.x before 7.2.0.8 allow remote attackers to reset the administrator superuser password to its default value via a direct request to the administrative IP address.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) web handler /DLSnap could allow an unauthenticated attacker to read arbitrary files on the system. IBM X-Force ID: 139566.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) web handler /DownloadFile does not require authentication to read arbitrary files from the system. IBM X-Force ID: 139473.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) could allow an authenticated user to access system files they should not have access to some of which could contain account credentials. IBM X-Force ID: 140368.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) could allow an authenticated user to obtain sensitive information that they should not have authorization to read. IBM X-Force ID: 140395.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) are 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: 140362.

IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products ( 6.1, 6.2, 6.3, 6.4, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.6.1, 7.7, 7.7.1, 7.8, 7.8.1, 8.1, and 8.1.1) could allow an authenticated user to obtain the private key which could make intercepting GUI communications possible. IBM X-Force ID: 140396.