Bug 1443615 (CVE-2017-7645) - CVE-2017-7645 kernel: nfsd: Incorrect handling of long RPC replies
Summary: CVE-2017-7645 kernel: nfsd: Incorrect handling of long RPC replies
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-7645
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1442407 1443617 1447168 1447640 1447641 1447642 1447643 1447644 1447645 1447646 1447647
Blocks: 1443616
TreeView+ depends on / blocked
 
Reported: 2017-04-19 14:45 UTC by Andrej Nemec
Modified: 2021-12-10 15:01 UTC (History)
35 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-06-08 03:10:46 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1615 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2017-06-29 16:41:56 UTC
Red Hat Product Errata RHSA-2017:1616 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-06-28 20:57:58 UTC
Red Hat Product Errata RHSA-2017:1647 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-06-28 20:34:27 UTC
Red Hat Product Errata RHSA-2018:1319 0 None None None 2018-05-08 18:59:26 UTC

Description Andrej Nemec 2017-04-19 14:45:10 UTC 
The Linux kernel built with the NFS Server Support(CONFIG_NFSD) is vulnerable to an out-of-bounds memory access issue. It could occur while processing arbitrarily long arguments sent by the NFSv2/NFSv3 PRC clients.

A remote RPC user/program could use this flaw to crash the krenel, resulting in DoS.

Upstream patch:
---------------
  -> https://git.kernel.org/linus/e6838a29ecb484c97e4efef9429643b9851fba6e

References:
-----------
  -> https://marc.info/?l=linux-nfs&m=149218228327497&w=2
  -> http://seclists.org/oss-sec/2017/q2/195
Comment 1 Andrej Nemec 2017-04-19 14:46:12 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1443617]
Comment 2 Prasad Pandit 2017-05-03 11:36:54 UTC 
Statement:

This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel
updates for Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2 may
address this issue.
Comment 10 errata-xmlrpc 2017-06-28 16:36:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:1647 https://access.redhat.com/errata/RHSA-2017:1647
Comment 11 errata-xmlrpc 2017-06-28 17:05:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1615 https://access.redhat.com/errata/RHSA-2017:1615
Comment 12 errata-xmlrpc 2017-06-28 17:08:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1616 https://access.redhat.com/errata/RHSA-2017:1616
Comment 13 errata-xmlrpc 2018-05-08 18:59:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1319 https://access.redhat.com/errata/RHSA-2018:1319
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