SSD Advisory – Linux AF_LLC Double Free

Vulnerability Summary
A use after free vulnerability in AF_LLC allows local attackers to control the flow of code that the kernel executes, allowing them to cause it to run arbitrary code and gain elevated privileges.

Vendor Response
The vulnerability was reported to the Kernel Security, which asked us to contact the netdev team. A patch was provided by the netdev team, on the 27th of March, and was later integrated into the main code of Linux (we are not certain when).

Attempts to recontact the netdev and understand more on the timeline, went unanswered.

We know that the patch has been introduced as part of:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.17-rc2&id=b85ab56c3f81c5a24b5a5213374f549df06430da

Credit
An independent security researcher has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program.

Affected systems
The oldest known version to be affected Linux version 2.6.39.4, the patch has been introduced as part of 4.17-rc2.
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SSD Advisory – Kingsoft Antivirus/Internet Security 9+ Privilege Escalation

Vulnerability Summary
The following advisory describes a kernel stack buffer overflow that leads to privilege escalation found in Kingsoft Antivirus/Internet Security 9+.

Kingsoft Antivirus “provides effective and efficient protection solution at no cost to users. It applies cloud security technology to monitor, scan and protect your systems without any worrying. The comprehensive defender and anti-virus tools prevent and protect your computer from unwanted virus, worms, and Trojans. With the simplest and easiest-to-use functions, users find themselves no difficulty to handle Kingsoft Antivirus.”

Credit
An independent security researcher, Steven Seeley, has reported this vulnerabilities to Beyond Security’s SecuriTeam Secure Disclosure program

Vendor response
We tried to contact Kingsoft since October 8 2017, repeated attempts to establish contact went unanswered. At this time there is no solution or workaround for these vulnerability.
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SSD Advisory – Huawei P8 wkupccpu debugfs Kernel Buffer Overflow

Vulnerability Summary
The following advisory describes a buffer overflow found in Huawei P8 Lite ALE-21 HI621sft, operating system versions EMUI 3.1 – wkupccpu debugfs driver.

Huawei Technologies Co. Ltd. is “a multinational networking and telecommunications equipment and services company, it is the largest telecommunications equipment manufacturer in the world and the second largest smartphone manufacturer in the world”

Credit
A security researcher from, TRUEL IT, has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program

Vendor response
Huawei confirmed that the vulnerability is not present on their most current version (with EMUI 4.0 or later), the only affected version is 3.1 and prior, it is recommended that all customers of Huawei upgrade to the latest version of their OS.

http://www.huawei.com/en/psirt/security-notices/huawei-sn-20171218-01-smartphone-en

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SSD安全公告-Linux内核XFRM权限提升漏洞

漏洞概要
以下安全公告描述了在Linux内核中发现的一个UAF漏洞,成功利用此漏洞的攻击者可以提升权限。漏洞存在于Netlink 套接字子系统 – XFRM.

Netlink用于在内核和用户空间进程之间传输信息。 它由用户空间进程的标准基于套接字的接口和内核模块的内部内核API组成。

漏洞提交者

一位独立的安全研究员Mohamed Ghannam向Beyond Security的SSD报告了该漏洞

厂商响应

该漏洞已在补丁1137b5e中被修复(“ipsec:修复中止xfrm策略转储崩溃”)

CVE: CVE-2017-16939

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