// For flags

CVE-2020-1752

glibc: use-after-free in glob() function when expanding ~user

Severity Score

7.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

Una vulnerabilidad de uso de la memoria previamente liberada introducida en glibc versiones anteriores a la versión 2.14, se descubrió en la manera en que se llevó a cabo la expansión de tilde. Las rutas de directorios que contenían una tilde inicial seguida de un nombre de usuario válido estaban afectadas por este problema. Un atacante local podría explotar este fallo creando una ruta especialmente diseñada que, al ser procesada por la función glob, podría conllevar a una ejecución de código arbitraria. Esto fue corregido en la versión 2.32.

A use-after-free vulnerability was found in glibc in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-11-27 CVE Reserved
  • 2020-04-30 CVE Published
  • 2024-04-06 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netapp
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H410c Firmware
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--
Affected
in Netapp
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H410c
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--
Safe
Gnu
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Glibc
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< 2.32.0
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-
Affected
Canonical
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Ubuntu Linux
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16.04
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lts
Affected
Canonical
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Ubuntu Linux
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18.04
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lts
Affected
Canonical
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Ubuntu Linux
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19.10
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-
Affected
Netapp
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Active Iq Unified Manager
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>= 9.5
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vmware_vsphere
Affected
Netapp
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Hci Management Node
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--
Affected
Netapp
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Solidfire
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Affected
Netapp
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Steelstore Cloud Integrated Storage
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--
Affected
Debian
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Debian Linux
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10.0
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-
Affected