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Sid 1-37154

Message

SERVER-OTHER OpenSSL invalid RSASSA-PSS certificate denial of service attempt

Summary

crypto/rsa/rsa_ameth.c in OpenSSL 1.0.1 before 1.0.1q and 1.0.2 before 1.0.2e allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an RSA PSS ASN.1 signature that lacks a mask generation function parameter.

Impact

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

CVE-2015-3194:

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-2015-3194: crypto/rsa/rsa_ameth.c in OpenSSL 1.0.1 before 1.0.1q and 1.0.2 before 1.0.2e allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an RSA PSS ASN.1 signature that lacks a mask generation function parameter.

Affected systems

  • 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 1.0.2
  • openssl openssl 1.0.2a
  • openssl openssl 1.0.2b
  • openssl openssl 1.0.2c
  • openssl openssl 1.0.2d
  • oracle mysql 5.6.28
  • oracle mysql 5.7.10

Ease of attack

CVE-2015-3194:

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

  • openssl.org/news/secadv/20151203.txt