CVE-2019-16779 In RubyGem excon, interrupted Persistent Connections May Leak Response Data

2019-12-1619:35:13

CWE-664

GitHub_M

www.cve.org

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N

5.7 Medium

AI Score

Confidence

High

0.008 Low

EPSS

Percentile

81.5%

JSON

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.

CNA Affected

[
  {
    "product": "excon",
    "vendor": "excon",
    "versions": [
      {
        "lessThan": "0.71.0",
        "status": "affected",
        "version": "< 0.71.0",
        "versionType": "custom"
      }
    ]
  }
]