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Sid 1-34623

Message

SERVER-WEBAPP PHP unserialize function integer overflow attempt

Summary

Integer overflow in the objectcustom function in ext/standard/varunserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

Impact

CVSS base score 7.5 CVSS impact score 6.4 CVSS exploitability score 10.0 confidentialityImpact PARTIAL integrityImpact PARTIAL availabilityImpact PARTIAL

CVE-2014-3669:

CVSS base score 7.5

CVSS impact score 6.4

CVSS exploitability score 10.0

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Detailed information

CVE-2014-3669: Integer overflow in the objectcustom function in ext/standard/varunserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

Affected systems

  • php php 5.4.0
  • php php 5.4.1
  • php php 5.4.2
  • php php 5.4.3
  • php php 5.4.4
  • php php 5.4.5
  • php php 5.4.6
  • php php 5.4.7
  • php php 5.4.8
  • php php 5.4.9
  • php php 5.4.10
  • php php 5.4.11
  • php php 5.4.12
  • php php 5.4.13
  • php php 5.4.14
  • php php 5.4.15
  • php php 5.4.16
  • php php 5.4.17
  • php php 5.4.18
  • php php 5.4.19
  • php php 5.4.20
  • php php 5.4.21
  • php php 5.4.22
  • php php 5.4.23
  • php php 5.4.24
  • php php 5.4.25
  • php php 5.4.26
  • php php 5.4.27
  • php php 5.4.28
  • php php 5.4.29
  • php php 5.4.30
  • php php 5.4.31
  • php php 5.4.32
  • php php 5.4.33
  • php php 5.5.0
  • php php 5.5.1
  • php php 5.5.2
  • php php 5.5.3
  • php php 5.5.4
  • php php 5.5.5
  • php php 5.5.6
  • php php 5.5.7
  • php php 5.5.8
  • php php 5.5.9
  • php php 5.5.10
  • php php 5.5.11
  • php php 5.5.12
  • php php 5.5.13
  • php php 5.5.14
  • php php 5.5.15
  • php php 5.5.16
  • php php 5.5.17
  • php php 5.6.0
  • php php 5.6.1

Ease of attack

CVE-2014-3669:

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

  • bugs.php.net/bug.php?id=68044