Bug 1094299 (CVE-2014-1737, CVE-2014-1738)

Summary: CVE-2014-1737 CVE-2014-1738 kernel: block: floppy: privilege escalation via FDRAWCMD floppy ioctl command
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: agordeev, aquini, bhu, carnil, dhoward, esammons, fhrbata, iboverma, jkacur, jkurik, jross, kernel-mgr, lgoncalv, lwang, matt, mcressma, nobody, npajkovs, pholasek, plougher, rvrbovsk, security-response-team, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel's floppy driver handled user space provided data in certain error code paths while processing FDRAWCMD IOCTL commands. A local user with write access to /dev/fdX could use this flaw to free (using the kfree() function) arbitrary kernel memory. (CVE-2014-1737, Important) It was found that the Linux kernel's floppy driver leaked internal kernel memory addresses to user space during the processing of the FDRAWCMD IOCTL command. A local user with write access to /dev/fdX could use this flaw to obtain information about the kernel heap arrangement. (CVE-2014-1738, Low) Note: A local user with write access to /dev/fdX could use these two flaws (CVE-2014-1737 in combination with CVE-2014-1738) to escalate their privileges on the system.
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-07-17 05:33:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1094302, 1094303, 1094304, 1094306, 1094308, 1094310, 1094311, 1094312, 1094313, 1094314, 1094315, 1094316, 1094318, 1096195    
Bug Blocks: 1094326    

Description Petr Matousek 2014-05-05 12:56:28 UTC
A flaw was found in the way Linux kernel's floppy driver treated userspace provided data in certain error code path while processing FDRAWCMD ioctl command. An local user with write access to /dev/fdX could use this flaw to kfree() arbitrary data. (CVE-2014-1737)

It was found that Linux kernel's floppy driver leaked internal kernel memory addresses to userspace during processing of FDRAWCMD ioctl command. An local user with write access to /dev/fdX could use this flaw to get information about kernel heap arrangment. (CVE-2014-1738)

An local user with write access to /dev/fdX could use these two flaws (CVE-2014-1737 in combination with CVE-2014-1738) to escalate their privileges on the system. 

Acknowledgements:

Red Hat would like to thank Matthew Daley for reporting these issues.

Comment 7 Petr Matousek 2014-05-09 12:04:28 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1096195]

Comment 8 Fedora Update System 2014-05-16 10:04:26 UTC
kernel-3.14.4-200.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2014-05-21 23:22:17 UTC
kernel-3.14.4-100.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 errata-xmlrpc 2014-05-27 16:28:35 UTC
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0557 https://rhn.redhat.com/errata/RHSA-2014-0557.html

Comment 11 errata-xmlrpc 2014-06-10 20:46:06 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0740 https://rhn.redhat.com/errata/RHSA-2014-0740.html

Comment 12 errata-xmlrpc 2014-06-19 17:53:43 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0771 https://rhn.redhat.com/errata/RHSA-2014-0771.html

Comment 13 errata-xmlrpc 2014-06-19 18:03:22 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.9 EUS - Server Only

Via RHSA-2014:0772 https://rhn.redhat.com/errata/RHSA-2014-0772.html

Comment 14 errata-xmlrpc 2014-06-24 15:59:23 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:0786 https://rhn.redhat.com/errata/RHSA-2014-0786.html

Comment 15 errata-xmlrpc 2014-06-26 17:08:41 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.2 AUS

Via RHSA-2014:0800 https://rhn.redhat.com/errata/RHSA-2014-0800.html

Comment 16 errata-xmlrpc 2014-06-26 17:17:54 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.6 Long Life

Via RHSA-2014:0801 https://rhn.redhat.com/errata/RHSA-2014-0801.html

Comment 17 Martin Prpič 2014-07-16 08:16:12 UTC
IssueDescription CVE-2014-1737:

A flaw was found in the way the Linux kernel's floppy driver handled user space provided data in certain error code paths while processing FDRAWCMD IOCTL commands. A local user with write access to /dev/fdX could use this flaw to free (using the kfree() function) arbitrary kernel memory.

Note: A local user with write access to /dev/fdX could use CVE-2014-1737 in combination with CVE-2014-1738 to escalate their privileges on the system.

IssueDescription CVE-2014-1738:

It was found that the Linux kernel's floppy driver leaked internal kernel memory addresses to user space during the processing of the FDRAWCMD IOCTL command. A local user with write access to /dev/fdX could use this flaw to obtain information about the kernel heap arrangement.

Note: A local user with write access to /dev/fdX could use CVE-2014-1737 in combination with CVE-2014-1738 to escalate their privileges on the system.

Comment 18 errata-xmlrpc 2014-07-17 15:32:57 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.4 EUS - Server and Compute Node Only

Via RHSA-2014:0900 https://rhn.redhat.com/errata/RHSA-2014-0900.html

Comment 19 Vincent Danen 2014-07-17 15:45:18 UTC
Statement:

(none)