Permissions, Privileges, and Access Controls in Apache HTTP Server

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32634

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-1896

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

mod_dav.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 mod_dav_svn module, but a certain href attribute in XML data refers to a non-DAV URI.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Apache HTTP Server: 2.2.0 - 2.2.24

CPE2.3

• cpe:2.3:a:apache_foundation:apache_http_server:2.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_http_server:2.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_http_server:2.2.3:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-updates/2013-08/msg00026.html
https://lists.opensuse.org/opensuse-updates/2013-08/msg00029.html
https://lists.opensuse.org/opensuse-updates/2013-08/msg00030.html
https://rhn.redhat.com/errata/RHSA-2013-1156.html
https://rhn.redhat.com/errata/RHSA-2013-1207.html
https://rhn.redhat.com/errata/RHSA-2013-1208.html
https://rhn.redhat.com/errata/RHSA-2013-1209.html
https://secunia.com/advisories/55032
https://support.apple.com/kb/HT6150
https://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/mod_dav.c?r1=1482522&r2=1485668&diff_format=h
https://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/mod_dav.c?view=log
https://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1896
https://www.apache.org/dist/httpd/Announcement2.2.html
https://www.securityfocus.com/bid/61129
https://www.ubuntu.com/usn/USN-1903-1
https://www-01.ibm.com/support/docview.wss?uid=swg21644047
https://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-c03922406-1%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18835
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19747

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.