In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
CVSS Score
7.8
EPSS Score
0.001
Published
2022-02-14
In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().
CVSS Score
7.8
EPSS Score
0.001
Published
2020-02-24
An issue was discovered in zsh before 5.6. The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line.
CVSS Score
9.8
EPSS Score
0.008
Published
2018-09-05
An issue was discovered in zsh before 5.6. Shebang lines exceeding 64 characters were truncated, potentially leading to an execve call to a program name that is a substring of the intended one.
CVSS Score
9.8
EPSS Score
0.008
Published
2018-09-05
zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.
CVSS Score
7.8
EPSS Score
0.002
Published
2018-04-11
Zsh before version 5.4.2-test-1 is vulnerable to a buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.
CVSS Score
7.8
EPSS Score
0.001
Published
2018-03-28
zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.
CVSS Score
5.5
EPSS Score
0.001
Published
2018-03-09
In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.
CVSS Score
9.8
EPSS Score
0.004
Published
2018-02-27
In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.
CVSS Score
9.8
EPSS Score
0.004
Published
2018-02-27
In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p.
CVSS Score
7.5
EPSS Score
0.003
Published
2018-02-27
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