Vulnerability Details : 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.
Vulnerability category: File inclusion
Products affected by CVE-2017-16997
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.21:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.20:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.22:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.19:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.25:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.23:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.26:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-16997
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-16997
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST | |
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-16997
-
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-16997
-
https://access.redhat.com/errata/RHBA-2019:0327
RHBA-2019:0327 - Bug Fix Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3092
RHSA-2018:3092 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://sourceware.org/bugzilla/show_bug.cgi?id=22625
22625 – (CVE-2017-16997) RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID binaries or if /proc is not mounted (CVE-2017-16997)Issue Tracking;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/102228
GNU C Library 'elf/dl-load.c ' CVE-2017-16997 Local Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
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https://sourceware.org/ml/libc-alpha/2017-12/msg00528.html
Aurelien Jarno - [PATCH] elf: Check for empty tokens before dynamic string token expansioIssue Tracking;Patch;Third Party Advisory
-
https://bugs.debian.org/884615
#884615 - src:glibc: CVE-2017-16997: incorrect RPATH/RUNPATH handling for SUID binaries - Debian Bug report logsIssue Tracking;Mailing List;Patch;Third Party Advisory
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