National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-11190 Detail

Current Description

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.7 MEDIUM
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 1.0


Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.7 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:C/I:N/A:N) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.4


Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
http://www.openwall.com/lists/oss-security/2019/04/15/1
http://www.securityfocus.com/bid/107890
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=a5b5352558f6808db0589644ea5401b3e3148a0d Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://usn.ubuntu.com/4008-1/
https://usn.ubuntu.com/4008-2/
https://usn.ubuntu.com/4008-3/
https://www.openwall.com/lists/oss-security/2019/04/03/4 Exploit Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/04/03/4/1 Exploit Mailing List Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (CWE-362)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/o:linux:linux_kernel
     Show Matching CPE(s)
Up to (excluding)
4.8


Change History

9 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11190
NVD Published Date:
04/11/2019
NVD Last Modified:
06/07/2019