Denial of service in Linux Kernel



Published: 2018-08-28
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-10938
CWE-ID CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Infinite loop

EUVDB-ID: #VU14536

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10938

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when processing network packets within the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c. A remote unauthenticated attacker can send a specially crafted packet to the affected system, force the Linux kernel enter an infinite loop and cause denial of service.

Mitigation

Install update from vendor's GIT repository:

Vulnerable software versions

Linux kernel: 4.0 - 4.13

External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40413955ee265a5e42f710...


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.



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