SUSE Linux update for the Linux Kernel

Published: 2017-11-30 | Updated: 2024-09-09

Risk	Medium
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2017-1000253 CVE-2017-13080 CVE-2017-14489 CVE-2017-15265 CVE-2017-15274 CVE-2017-12192
CWE-ID	CWE-119 CWE-320 CWE-20 CWE-416 CWE-476
Exploitation vector	Local network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available.
Vulnerable software	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU8638

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2017-1000253

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an error when loading of Executable and Linkable Format (ELF) executables. A local user can create a specially crafted ELF binary, trigger memory corruption and execute arbitrary code on the vulnerable system with root privileges.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 3.6 - 3.10.107

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.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?

Yes. This vulnerability is being exploited in the wild.

2) Key management errors

EUVDB-ID: #VU8840

Risk: Medium

CVSSv4.0: 7.4 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2017-13080

CWE-ID: CWE-320 - Key Management Errors

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used group key.

The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.

The vulnerability is dubbed "KRACK" attack.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 3.18 - 4.13.13

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

3) Denial of service

EUVDB-ID: #VU10720

Risk: Low

CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-14489

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

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

The weakness exists in the drivers/scsi/scsi_transport_iscsi.c due to leveraging incorrect length validation. A local attacker can cause a denial of service.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 4.13.1 - 4.13.2

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.13.2:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.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. However, proof of concept for this vulnerability is available.

4) Use-after-free

EUVDB-ID: #VU8816

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-2017-15265

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to use-after-free error in the ALSA sequencer interface (/dev/snd/seq). A local attacker can run a specially crafted application, trigger memory corruption 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

Linux kernel: 4.10 - 4.13.6

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.13.6:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.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: #VU10721

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-15274

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The weakness exists in he security/keys/keyctl.c due to a NULL pointer dereference. A local attacker can create a specially crafted add_key or keyctl system call and cause a denial of service.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 4.11.1 - 4.11.4

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.11.4:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.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) NULL pointer dereference

EUVDB-ID: #VU10711

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12192

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The weakness exists in the Key Management sub component of the Linux kernel when trying to issue a KEYTCL_READ on a negative key due to a NULL pointer dereference. A local attacker can cause the kernel and service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 4.13.1 - 4.13.4

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.13.4:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00082.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.