Detections
Analytics
NewStart CGSL CORE 5.04 / MAIN 5.04 : zsh Multiple Vulnerabilities (NS-SA-2019-0070)
critical Nessus Plugin ID 127273
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Synopsis
The remote machine is affected by multiple vulnerabilities.Description
The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has zsh packages installed that are affected by multiple vulnerabilities:- A buffer overflow flaw was found in the zsh shell file descriptor redirection functionality. An attacker could use this flaw to cause a denial of service by crashing the user shell. (CVE-2014-10071)
- A NULL pointer dereference flaw was found in the code responsible for the cd builtin command of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell.
(CVE-2017-18205)
- A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom you have new mail message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1100)
- A buffer overflow flaw was found in the zsh shell auto- complete 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 auto-complete to traverse the before mentioned path.
If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1083)
- 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. (CVE-2018-1071)
- A NULL pointer dereference flaw was found in the code responsible for saving hashtables of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell. (CVE-2018-7549)
- A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. If the user affected is privileged, this leads to privilege escalation. (CVE-2017-18206)
- A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do symbolic link resolution in the aforementioned path.
An attacker could exploit this vulnerability to cause a denial of service condition on the target.
(CVE-2014-10072)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade the vulnerable CGSL zsh packages. Note that updated packages may not be available yet. Please contact ZTE for more information.See Also
Plugin Details
Severity: Critical
ID: 127273
File Name: newstart_cgsl_NS-SA-2019-0070_zsh.nasl
Version: 1.4
Type: local
Published: 8/12/2019
Updated: 1/14/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2017-18206
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/17/2019
Vulnerability Publication Date: 2/27/2018
Reference Information
CVE: CVE-2014-10071, CVE-2014-10072, CVE-2017-18205, CVE-2017-18206, CVE-2018-1071, CVE-2018-1083, CVE-2018-1100, CVE-2018-7549