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CVE-2017-1000410

Quick assessment

Affected
n/a n/a
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 3.3-rc1及之后的版本中的L2CAP命令处理存在信息泄露漏洞。攻击者可利用该漏洞获取未初始化的栈变量，并控制未初始化栈变量中的数据，绕过KASLR和栈金丝雀保护。

AI Predicted 7.8 Difficulty: Moderate EPSS 4.22% · P91
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I. Basic Information for CVE-2017-1000410

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Linux kernel version 3.3-rc1 and later is affected by a vulnerability lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. This info leak is a result of uninitialized stack variables that may be returned to an attacker in their uninitialized state. By manipulating the code flows that precede the handling of these configuration messages, an attacker can also gain some control over which data will be held in the uninitialized stack variables. This can allow him to bypass KASLR, and stack canaries protection - as both pointers and stack canaries may be leaked in this manner. Combining this vulnerability (for example) with the previously disclosed RCE vulnerability in L2CAP configuration parsing (CVE-2017-1000251) may allow an attacker to exploit the RCE against kernels which were built with the above mitigations. These are the specifics of this vulnerability: In the function l2cap_parse_conf_rsp and in the function l2cap_parse_conf_req the following variable is declared without initialization: struct l2cap_conf_efs efs; In addition, when parsing input configuration parameters in both of these functions, the switch case for handling EFS elements may skip the memcpy call that will write to the efs variable: ... case L2CAP_CONF_EFS: if (olen == sizeof(efs)) memcpy(&efs, (void *)val, olen); ... The olen in the above if is attacker controlled, and regardless of that if, in both of these functions the efs variable would eventually be added to the outgoing configuration request that is being built: l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs), (unsigned long) &efs); So by sending a configuration request, or response, that contains an L2CAP_CONF_EFS element, but with an element length that is not sizeof(efs) - the memcpy to the uninitialized efs variable can be avoided, and the uninitialized variable would be returned to the attacker (16 bytes).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 3.3-rc1及之后的版本中的L2CAP命令处理存在信息泄露漏洞。攻击者可利用该漏洞获取未初始化的栈变量，并控制未初始化栈变量中的数据，绕过KASLR和栈金丝雀保护。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
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II. Public POCs for CVE-2017-1000410

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III. Intelligence Information for CVE-2017-1000410

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Vendor Advisories for CVE-2017-1000410 (11)

Mailing List Discussions for CVE-2017-1000410 (1)

Same Patch Batch · n/a · 2017-12-07 · 12 CVEs total

CVE-2017-17435 Vaultek Gun Safe VT20i 安全漏洞
CVE-2017-17436 Vaultek Gun Safe VT20i 安全漏洞
CVE-2017-17448 Linux kernel 安全漏洞
CVE-2017-17449 Linux kernel 安全漏洞
CVE-2017-17450 Linux kernel 安全漏洞
CVE-2017-17451 WordPress WP Mailster插件跨站脚本漏洞
CVE-2017-17384 ISPConfig 安全漏洞
CVE-2017-17430 Sangoma NetBorder/Vega Session Controller 安全漏洞
CVE-2017-17458 Mercurial 安全漏洞
CVE-2017-17459 Fossil 安全漏洞
CVE-2017-14386 Dell 2335dn和2355dn Multifunction Laser Printers 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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