CVE-2018-0502

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.22% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory zsh.org
Affected: n/a zsh before 5.6
Published at:
Updated at:

References

Link Tags
https://bugs.debian.org/908000 patch mailing list third party advisory
https://sourceforge.net/p/zsh/code/ci/1c4c7b6a4d17294df028322b70c53803a402233d third party advisory patch
https://www.zsh.org/mla/zsh-announce/136 vendor advisory mailing list
https://usn.ubuntu.com/3764-1/ third party advisory vendor advisory
https://security.gentoo.org/glsa/201903-02 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html mailing list

Frequently Asked Questions

What is the severity of CVE-2018-0502?
CVE-2018-0502 has been scored as a critical severity vulnerability.
How to fix CVE-2018-0502?
To fix CVE-2018-0502, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0502 being actively exploited in the wild?
It is possible that CVE-2018-0502 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0502?
CVE-2018-0502 affects n/a zsh before 5.6.
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