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CVE-2019-11190

Good to know:

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Date: April 11, 2019

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.

Language: C

Severity Score

Related Resources (17)

https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://security-tracker.debian.org/tracker/CVE-2019-11190
http://www.openwall.com/lists/oss-security/2019/04/15/1
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff
https://usn.ubuntu.com/4008-1/
https://usn.ubuntu.com/4008-2/
https://usn.ubuntu.com/4008-3/
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-11190
http://www.securityfocus.com/bid/107890
https://access.redhat.com/security/cve/CVE-2019-11190
https://www.openwall.com/lists/oss-security/2019/04/03/4/1
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=a5b5352558f6808db0589644ea5401b3e3148a0d
https://nvd.nist.gov/vuln/detail/CVE-2019-11190
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://www.openwall.com/lists/oss-security/2019/04/03/4
https://www.mend.io/vulnerability-database/CVE-2019-11190

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Top Fix

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CVSS v3.1

Base Score:
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

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

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