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Sid 1-44808

Message

INDICATOR-COMPROMISE Apache HTTP Server possible mod_dav.c remote denial of service vulnerability attempt

Summary

This event is generated when an Apache HTTP Server possible mod_dav.c remote denial of service vulnerability is attempted.

Impact

Attempted User Privilege Gain

CVE-2013-1896:

CVSS base score 4.3

CVSS impact score 2.9

CVSS exploitability score 8.6

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Detailed information

CVE-2013-1896: moddav.c in the Apache HTTP Server before 2.2.25 does not properly determine whether DAV is enabled for a URI, which allows remote attackers to cause a denial of service (segmentation fault) via a MERGE request in which the URI is configured for handling by the moddav_svn module, but a certain href attribute in XML data refers to a non-DAV URI.

Affected systems

  • apache http_server 2.2.0
  • apache http_server 2.2.1
  • apache http_server 2.2.2
  • apache http_server 2.2.3
  • apache http_server 2.2.4
  • apache http_server 2.2.6
  • apache http_server 2.2.8
  • apache http_server 2.2.9
  • apache http_server 2.2.10
  • apache http_server 2.2.11
  • apache http_server 2.2.12
  • apache http_server 2.2.13
  • apache http_server 2.2.14
  • apache http_server 2.2.15
  • apache http_server 2.2.16
  • apache http_server 2.2.17
  • apache http_server 2.2.18
  • apache http_server 2.2.19
  • apache http_server 2.2.20
  • apache http_server 2.2.21
  • apache http_server 2.2.22
  • apache http_server 2.2.23
  • apache http_server 2.2.24

Ease of attack

CVE-2013-1896:

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

False positives

False negatives

Corrective action

Contributors

  • Cisco's Talos Intelligence Group

Additional References