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Sid 1-40360

Message

SERVER-OTHER OpenSSL OCSP Status Request Extension denial of service attempt

Summary

Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.

Impact

CVSS base score 7.5 CVSS impact score 3.6 CVSS exploitability score 3.9 confidentialityImpact NONE integrityImpact NONE availabilityImpact NONE

CVE-2016-6304:

CVSS base score 7.5

CVSS impact score 3.6

CVSS exploitability score 3.9

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Detailed information

CVE-2016-6304: Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.

Affected systems

  • nodejs node.js 6.6.0
  • openssl openssl 1.0.1
  • openssl openssl 1.0.1a
  • openssl openssl 1.0.1b
  • openssl openssl 1.0.1c
  • openssl openssl 1.0.1d
  • openssl openssl 1.0.1e
  • openssl openssl 1.0.1f
  • openssl openssl 1.0.1g
  • openssl openssl 1.0.1h
  • openssl openssl 1.0.1i
  • openssl openssl 1.0.1j
  • openssl openssl 1.0.1k
  • openssl openssl 1.0.1l
  • openssl openssl 1.0.1m
  • openssl openssl 1.0.1n
  • openssl openssl 1.0.1o
  • openssl openssl 1.0.1p
  • openssl openssl 1.0.1q
  • openssl openssl 1.0.1r
  • openssl openssl 1.0.1s
  • openssl openssl 1.0.1t
  • openssl openssl 1.0.2
  • openssl openssl 1.0.2a
  • openssl openssl 1.0.2b
  • openssl openssl 1.0.2c
  • openssl openssl 1.0.2d
  • openssl openssl 1.0.2e
  • openssl openssl 1.0.2f
  • openssl openssl 1.0.2h
  • openssl openssl 1.1.0
  • novell suselinuxenterprisemoduleforwebscripting 12.0

Ease of attack

CVE-2016-6304:

Access Vector

Access Complexity

Authentication

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References

  • www.openssl.org/news/secadv/20160922.txt