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CVE-2013-4247

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Date: August 24, 2013

Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.

Language: C

Severity Score

Related Resources (8)

https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6
https://bugzilla.redhat.com/show_bug.cgi?id=998401
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b
https://people.canonical.com/~ubuntu-security/cve/CVE-2013-4247
http://www.openwall.com/lists/oss-security/2013/08/14/10
https://nvd.nist.gov/vuln/detail/CVE-2013-4247
https://www.mend.io/vulnerability-database/CVE-2013-4247

Severity Score

Weakness Type (CWE)

Numeric Errors

CWE-189

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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