// For flags

CVE-2017-16997

glibc: Incorrect handling of RPATH in elf/dl-load.c can be used to execute code loaded from arbitrary libraries

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

elf/dl-load.c en la biblioteca GNU C (también llamada glibc o libc6) desde la versión 2.19 hasta la 2.26 manipula incorrectamente RPATH y RUNPATH que contienen $ORIGIN para un programa privilegiado (setuid o AT_SECURE), lo que permite que los usuarios locales obtengan privilegios mediante una librería con malware troyano en el directorio actual. Esto está relacionado con las funciones fillin_rpath y decompose_rpath. Esto se asocia con la interpretación incorrecta de un token RPATH/RUNPATH vacío como el directorio "./". NOTA: esta configuración de RPATH/RUNPATH para un programa privilegiado es aparentemente muy poco común. Lo más probable es que este programa no se provea con una distribución de Linux común.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-04-03 CVE Published
  • 2017-11-27 CVE Reserved
  • 2018-01-03 First Exploit
  • 2024-08-05 CVE Updated
  • 2024-08-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-426: Untrusted Search Path
  • CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.19
Search vendor "Gnu" for product "Glibc" and version "2.19"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.20
Search vendor "Gnu" for product "Glibc" and version "2.20"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.21
Search vendor "Gnu" for product "Glibc" and version "2.21"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.22
Search vendor "Gnu" for product "Glibc" and version "2.22"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.23
Search vendor "Gnu" for product "Glibc" and version "2.23"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.25
Search vendor "Gnu" for product "Glibc" and version "2.25"
-
Affected
Gnu
Search vendor "Gnu"
 Glibc
Search vendor "Gnu" for product "Glibc"
 2.26
Search vendor "Gnu" for product "Glibc" and version "2.26"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux Desktop
Search vendor "Redhat" for product "Enterprise Linux Desktop"
 7.0
Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux Server
Search vendor "Redhat" for product "Enterprise Linux Server"
 7.0
Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux Workstation
Search vendor "Redhat" for product "Enterprise Linux Workstation"
 7.0
Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"
-
Affected