386445 – Kernel: CIFS: DNS result spoofing and arbritray mounts (CVE-2010-2524)

Bug 386445 - Kernel: CIFS: DNS result spoofing and arbritray mounts (CVE-2010-2524)

Summary: Kernel: CIFS: DNS result spoofing and arbritray mounts (CVE-2010-2524)

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal
Assignee:	Gentoo Security

URL:
Whiteboard:	[linux < 2.6.35]
Keywords:

Depends on:
Blocks:

Reported:	2011-10-08 17:44 UTC by GLSAMaker/CVETool Bot
Modified:	2013-09-16 00:50 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

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Description GLSAMaker/CVETool Bot gentoo-dev

2011-10-08 17:44:26 UTC

CVE-2010-2524 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-2524):
  The DNS resolution functionality in the CIFS implementation in the Linux
  kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a
  user's keyring for the dns_resolver upcall in the cifs.upcall userspace
  helper, which allows local users to spoof the results of DNS queries and
  perform arbitrary CIFS mounts via vectors involving an add_key call, related
  to a "cache stuffing" issue and MS-DFS referrals.