CVE-2017-16997

elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.

CVSS v3.0 7.8 HIGH
CVSS v2.0 9.3 HIGH

7.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://sourceware.org/ml/libc-alpha/2017-12/msg00528.html	Issue Tracking Patch Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=22625	Issue Tracking Patch Third Party Advisory
https://bugs.debian.org/884615	Issue Tracking Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/102228	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:3092	Third Party Advisory
https://access.redhat.com/errata/RHBA-2019:0327	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnu:glibc:2.22:::::::*
	cpe:2.3:a:gnu:glibc:2.25:::::::*
	cpe:2.3:a:gnu:glibc:2.19:::::::*
	cpe:2.3:a:gnu:glibc:2.20:::::::*
	cpe:2.3:a:gnu:glibc:2.21:::::::*
	cpe:2.3:a:gnu:glibc:2.23:::::::*
	cpe:2.3:a:gnu:glibc:2.26:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*

Information

Published : 2017-12-17 17:29

Updated : 2020-10-15 06:28

NVD link : CVE-2017-16997

Mitre link : CVE-2017-16997

JSON object : View

CWE

CWE-426

Untrusted Search Path

Products Affected

redhat

enterprise_linux_desktop
enterprise_linux_workstation
enterprise_linux_server

gnu

glibc

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7.8 /10