SUSE Linux update for the Linux Kernel



Published: 2018-03-12
Risk Medium
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2017-13215
CVE-2017-17741
CVE-2017-18017
CVE-2017-18079
CVE-2017-5715
CVE-2018-1000004
CVE-2018-5332
CVE-2018-5333
CWE-ID CWE-264
CWE-125
CWE-416
CWE-476
CWE-200
CWE-362
CWE-787
Exploitation vector Network
Public exploit Public exploit code for vulnerability #5 is available.
Public exploit code for vulnerability #8 is available.
Vulnerable software
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SUSE Linux
Operating systems & Components / Operating system

Vendor SUSE

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Privilege escalation

EUVDB-ID: #VU10938

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13215

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

Exploit availability: No

Description

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

The weakness exists due to a flaw in the Upstream kernel skcipher. A remote attacker can trick the victim into opening a specially crafted application and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Out-of-bounds read

EUVDB-ID: #VU9773

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-17741

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The weakness exists due to an error in the KVM implementation in the Linux kernel. A local attacker can trigger write_mmio stack-based out-of-bounds read or possibly have unspecified other impact, related to arch/x86/kvm/x86.c and include/trace/events/kvm.h and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.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) Use-after-free error

EUVDB-ID: #VU10678

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-18017

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition no the target system.

The weakness exists in the tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel due to use-after-free error. A remote attacker can leverage the presence of xt_TCPMSS in an iptables action, trigger memory corruption and cause the system to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Null pointer dereference

EUVDB-ID: #VU10939

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-18079

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The weakness exists in the drivers/input/serio/i8042.c due to the port->exists value can change after it is validated. A remote attacker can trigger NULL pointer dereference and cause the system to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

5) Information disclosure

EUVDB-ID: #VU9883

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-5715

CWE-ID: CWE-200 - Information exposure

Exploit availability: Yes

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in Intel CPU hardware due to improper implementation of the speculative execution of instructions. A local attacker can utilize branch target injection, execute arbitrary code, perform a side-channel attack and read sensitive memory information.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.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.

6) Race condition

EUVDB-ID: #VU10679

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1000004

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The weakness exists due to race condition in the sound system. A remote attacker can trigger deadlock and cause the system to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

7) Heap out-of-bounds write

EUVDB-ID: #VU10002

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5332

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The weakness exists in the rds_message_alloc_sgs() function due to improper validation of DMA page allocation values. A local attacker can trigger a heap-based out-of-bounds write and cause the system to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.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) Null pointer dereference

EUVDB-ID: #VU10001

Risk: Medium

CVSSv3.1: 8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-5333

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: Yes

Description

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

The weakness exists in the rds_cmsg_atomic function due to insufficient handling of user-supplied input. A remote attacker can send a specially crafted HTTP request, trigger NULL pointer dereference and cause the system to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 11

External links

http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.



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