// For flags

CVE-2019-16779

In RubyGem excon, interrupted Persistent Connections May Leak Response Data

Severity Score

5.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this.

En RubyGem excon versiones anteriores a 0.71.0, se presentó una condición de carrera alrededor de conexiones persistentes, donde una conexión que es interrumpida (tal y como, mediante un tiempo de espera) dejaría datos en el socket. Las peticiones posteriores entonces leerían estos datos y devolverían el contenido de la respuesta anterior. La ventana de condición de carrera parece ser corta, y sería difícil explotar esto a propósito.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-09-24 CVE Reserved
  • 2019-12-16 CVE Published
  • 2023-10-20 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-664: Improper Control of a Resource Through its Lifetime
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Excon Project
Search vendor "Excon Project"
 Excon
Search vendor "Excon Project" for product "Excon"
 < 0.71.0
Search vendor "Excon Project" for product "Excon" and version " < 0.71.0"
-
Affected
Opensuse
Search vendor "Opensuse"
 Backports Sle
Search vendor "Opensuse" for product "Backports Sle"
 15.0
Search vendor "Opensuse" for product "Backports Sle" and version "15.0"
sp1
Affected
Opensuse
Search vendor "Opensuse"
 Leap
Search vendor "Opensuse" for product "Leap"
 15.1
Search vendor "Opensuse" for product "Leap" and version "15.1"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected