Use After Free

Affecting exim4 package, versions <4.89-2+deb9u2

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Overview

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.

References

CVSS Score

9.8
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE
CVE-2017-16943
CWE
CWE-416
Snyk ID
SNYK-DEBIAN9-EXIM4-382955
Disclosed
25 Nov, 2017
Published
25 Nov, 2017