// For flags

CVE-2022-45939

emacs: ctags local command execution vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the ctags program. For example, a victim may use the "ctags *" command (suggested in the ctags documentation) in a situation where the current working directory has contents that depend on untrusted input.

GNU Emacs hasta la versión 28.2 permite a los atacantes ejecutar comandos a través de metacaracteres de shell en el nombre de un archivo de código fuente, porque lib-src/etags.c utiliza la función de librería C del sistema en su implementación del programa ctags. Por ejemplo, una víctima puede utilizar el comando "ctags *" (sugerido en la documentación de ctags) en una situación en la que el directorio de trabajo actual tiene contenidos que dependen de entradas que no son de confianza.

A flaw was found in Etags, the Ctags implementation of Emacs. A file with a crafted filename may result in arbitrary command execution when processed by Etags.

*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
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-11-28 CVE Reserved
  • 2022-11-28 CVE Published
  • 2024-07-05 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gnu
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 Emacs
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 <= 28.2
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-
Affected
Debian
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 Debian Linux
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 10.0
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-
Affected
Debian
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 Debian Linux
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 11.0
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-
Affected
Fedoraproject
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 Fedora
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 36
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Affected
Fedoraproject
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 Fedora
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 37
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-
Affected