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Oracle Linux: CVE-2018-13259: ELSA-2019-2017: zsh security and bug fix update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2018-13259: ELSA-2019-2017: zsh security and bug fix update (MODERATE) (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
09/04/2018
Created
07/23/2020
Added
07/21/2020
Modified
07/22/2024

Description

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. It was discovered that zsh does not properly validate the shebang of input files and it truncates it to the first 64 bytes. A local attacker may use this flaw to make zsh execute a different binary than what is expected, named with a substring of the shebang one.

Solution(s)

  • oracle-linux-upgrade-zsh
  • oracle-linux-upgrade-zsh-html

References

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