OpenSUSE Linux update for zsh

1) Privilege escalation

EUVDB-ID: #VU10872

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-10070

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to improper security restrictions when initial evaluating the values of imported integer variables. A local attacker can gain elevated privileges.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.0.6

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU10871

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-10071

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the exec.c source code file due to buffer overflow. A local attacker can send long file descriptors (fds), in the >& fd syntax, trigger memory corruption and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.0.6

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Buffer overflow

EUVDB-ID: #VU10874

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-10072

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the utils.c source code file due to buffer overflow. A local attacker can trigger memory corruption and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.0.5

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Off-by-one error

EUVDB-ID: #VU10862

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-10714

CWE-ID: CWE-193 - Off-by-one Error

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.

The weakness exists due to an off-by-one error. A local attacker can use undersized buffers for PATH_MAX characters and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.2

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) NULL pointer dereference

EUVDB-ID: #VU10869

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18205

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.

The weakness exists due to a NULL pointer dereference when processing a cd command while in sh compatibility mode. A local attacker can cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.3.1

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Buffer overflow

EUVDB-ID: #VU10855

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18206

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the utils.c source code file due to insufficient checks on buffer lengths for symlink expansion. A local attacker can send specially crafted input, trigger memory corruption and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.3.1

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Stack-based buffer overflow

EUVDB-ID: #VU12187

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1071

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DOS condition on the target system.

The weakness exists in the exec.c:hashcmd() function due to stack-based buffer overflow. A local attacker can trigger memory corruption and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.4 - 5.4.2

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Buffer overflow

EUVDB-ID: #VU11349

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1083

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the compctl.c source code file due to insufficient bounds checking on the PATH_MAX-sized buffer used for file completion candidates. A local attacker can create a malicious directory path, trick the victim into using the autocomplete functionality to traverse the path, trigger buffer overflow and execute arbitrary code with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 3.0.0 - 5.4.1

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Improper input validation

EUVDB-ID: #VU10856

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7549

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the params.c source code file due to improper handling of hash tables. A local attacker can copy an empty hash table with the typeset -p command and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

zsh: 5.0.0 - 5.4.2

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2018-04/msg00073.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Risk	Low
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2014-10070 CVE-2014-10071 CVE-2014-10072 CVE-2016-10714 CVE-2017-18205 CVE-2017-18206 CVE-2018-1071 CVE-2018-1083 CVE-2018-7549
CWE-ID	CWE-264 CWE-120 CWE-193 CWE-476 CWE-121 CWE-20
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	zsh Client/Desktop applications / Software for system administration
Vendor	SourceForge