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CVE
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CVE-2019-11190Date: (C)2019-06-19   (M)2024-04-19


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 4.7CVSS Score : 4.7
Exploit Score: 1.0Exploit Score: 3.4
Impact Score: 3.6Impact Score: 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: HIGHAvailability: NONE
Integrity: NONE 
Availability: NONE 
  
Reference:
BID-107890
USN-4008-1
USN-4008-2
USN-4008-3
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
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=a5b5352558f6808db0589644ea5401b3e3148a0d
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff
https://www.openwall.com/lists/oss-security/2019/04/03/4
https://www.openwall.com/lists/oss-security/2019/04/03/4/1
openSUSE-SU-2019:1570

CPE    1
cpe:/o:linux:linux_kernel
CWE    1
CWE-362
OVAL    16
oval:org.secpod.oval:def:205534
oval:org.secpod.oval:def:1504102
oval:org.secpod.oval:def:503608
oval:org.secpod.oval:def:89003393
...

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