Arch Linux update for linux



Published: 2016-08-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-5696
CWE-ID CWE-300
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Arch Linux
Operating systems & Components / Operating system

Vendor Arch Linux

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Man-in-the-middle attack

EUVDB-ID: #VU357

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2016-5696

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to write arbitrary files and cause DoS condition on the target system.

The weakness exists due to an error in net/ipv4/tcp_input.c while determining the rate of challenge ACK segments. A remote attacker can perform man-in-the-middle attack and hijack TCP sessions via a blind in-window attack.

Mitigation

Update the affected package to version 4.7-1.

Vulnerable software versions

Arch Linux: All versions

External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75ff39ccc1bd5d3c455b68...


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, proof of concept for this vulnerability is available.



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