Bash

A flaw was found in the bash package, where a heap-buffer overflow can occur in valid parameter_transform. This issue may lead to memory problems.

Published: 2023-01-05T00:00:00.000Z
Updated: 2025-11-03T21:46:30.575Z

rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.

Published: 2019-03-22T07:05:28.000Z
Updated: 2024-08-04T22:01:55.187Z

An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.

Published: 2019-11-28T00:27:51.000Z
Updated: 2025-06-09T15:51:35.168Z

popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.

Published: 2017-01-23T21:00:00.000Z
Updated: 2025-08-06T21:12:45.629Z

Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.

Published: 2017-01-19T20:00:00.000Z
Updated: 2024-08-06T02:04:54.955Z