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Sid 1-36096

Message

SERVER-OTHER OpenSSL DTLS handshake oversized fragment length denial of service attempt

Summary

d1_both.c in the DTLS implementation in OpenSSL 0.9.8 before 0.9.8zb, 1.0.0 before 1.0.0n, and 1.0.1 before 1.0.1i allows remote attackers to cause a denial of service (memory consumption) via crafted DTLS handshake messages that trigger memory allocations corresponding to large length values.

Impact

CVSS base score 5.0 CVSS impact score 2.9 CVSS exploitability score 10.0 confidentialityImpact NONE integrityImpact NONE availabilityImpact NONE

CVE-2014-3506:

CVSS base score 5.0

CVSS impact score 2.9

CVSS exploitability score 10.0

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Detailed information

CVE-2014-3506: d1_both.c in the DTLS implementation in OpenSSL 0.9.8 before 0.9.8zb, 1.0.0 before 1.0.0n, and 1.0.1 before 1.0.1i allows remote attackers to cause a denial of service (memory consumption) via crafted DTLS handshake messages that trigger memory allocations corresponding to large length values.

Affected systems

  • openssl openssl 0.9.8
  • openssl openssl 0.9.8a
  • openssl openssl 0.9.8b
  • openssl openssl 0.9.8c
  • openssl openssl 0.9.8d
  • openssl openssl 0.9.8e
  • openssl openssl 0.9.8f
  • openssl openssl 0.9.8g
  • openssl openssl 0.9.8h
  • openssl openssl 0.9.8i
  • openssl openssl 0.9.8j
  • openssl openssl 0.9.8k
  • openssl openssl 0.9.8l
  • openssl openssl 0.9.8m
  • openssl openssl 0.9.8n
  • openssl openssl 0.9.8o
  • openssl openssl 0.9.8p
  • openssl openssl 0.9.8q
  • openssl openssl 0.9.8r
  • openssl openssl 0.9.8s
  • openssl openssl 0.9.8t
  • openssl openssl 0.9.8u
  • openssl openssl 0.9.8v
  • openssl openssl 0.9.8w
  • openssl openssl 0.9.8x
  • openssl openssl 0.9.8y
  • openssl openssl 0.9.8za
  • openssl openssl 1.0.0
  • openssl openssl 1.0.0a
  • openssl openssl 1.0.0b
  • openssl openssl 1.0.0c
  • openssl openssl 1.0.0d
  • openssl openssl 1.0.0e
  • openssl openssl 1.0.0f
  • openssl openssl 1.0.0g
  • openssl openssl 1.0.0h
  • openssl openssl 1.0.0i
  • openssl openssl 1.0.0j
  • openssl openssl 1.0.0k
  • openssl openssl 1.0.0l
  • openssl openssl 1.0.0m
  • 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

Ease of attack

CVE-2014-3506:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

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

  • openssl.org/news/vulnerabilities.html