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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:165774
[Rus]
Version
4
Class
patch
ALTXid
375023
Language
English
Severity
Critical
Title
ALAS-2018-1089 -- security update for zsh
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.(CVE-2018-0502)
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.(CVE-2018-13259)
Family
unix
Platform
Amazon Linux 2
Product
zsh
Reference
VENDOR: ALAS-2018-1089
VENDOR: ALAS-2018-1089
Id:
ALAS-2018-1089
Reference:
https://alas.aws.amazon.com/AL2/ALAS-2018-1089.html
CVE: CVE-2018-0502
CVE: CVE-2018-0502
Id:
CVE-2018-0502
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0502
Comment
: 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.
CVSSv2 Score:
7.5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
9.8
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE:
20 (Improper Input Validation)
References:
https://www.zsh.org/mla/zsh-announce/136 (MISC)
https://sourceforge.net/p/zsh/code/ci/1c4c7b6a4d17294df028322b70c53803a402233d (MISC)
https://bugs.debian.org/908000 (MISC)
USN-3764-1 (UBUNTU)
GLSA-201903-02 (GENTOO)
[debian-lts-announce] 20201201 [SECURITY] [DLA 2470-1] zsh security update (MLIST)
CVE: CVE-2018-13259
CVE: CVE-2018-13259
Id:
CVE-2018-13259
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-13259
Comment
: 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.
CVSSv2 Score:
7.5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
9.8
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE:
20 (Improper Input Validation)
References:
https://www.zsh.org/mla/zsh-announce/136 (MISC)
https://sourceforge.net/p/zsh/code/ci/1c4c7b6a4d17294df028322b70c53803a402233d (MISC)
https://bugs.debian.org/908000 (MISC)
USN-3764-1 (UBUNTU)
GLSA-201903-02 (GENTOO)
RHSA-2019:2017 (REDHAT)
[debian-lts-announce] 20201201 [SECURITY] [DLA 2470-1] zsh security update (MLIST)
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