Red Hat update for Linux Kernel



Published: 2018-04-26
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2013-2929
CVE-2017-5715
CWE-ID CWE-264
CWE-200
Exploitation vector Local
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
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Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

kernel (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU12205

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2929

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

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to obtain potentially sensitive information and bypass security restrictions on the target system.

The weakness exists due to improper use of the get_dumpable function. A local attacker can gain access to potentially sensitive information from IA64 scratch registers via a crafted application, related to kernel/ptrace.c and arch/ia64/include/asm/processor.h, or bypass intended ptrace restrictions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server - AUS: 5.9

kernel (Red Hat package): 2.6.18-8.1.1.el5 - 2.6.18-348.34.2.el5

External links

http://access.redhat.com/errata/RHSA-2018:1252


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) 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

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server - AUS: 5.9

kernel (Red Hat package): 2.6.18-8.1.1.el5 - 2.6.18-348.34.2.el5

External links

http://access.redhat.com/errata/RHSA-2018:1252


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.



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