Vulnerability identifier: #VU32550

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0098

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache HTTP Server
Server applications / Web servers

Vendor: Apache Foundation

Description

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

The log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server before 2.4.8 allows remote attackers to cause a denial of service (segmentation fault and daemon crash) via a crafted cookie that is not properly handled during truncation.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Apache HTTP Server: 2.4.0 - 2.4.7

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External links
http://advisories.mageia.org/MGASA-2014-0135.html
http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10698
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
http://marc.info/?l=bugtraq&m=141017844705317&w=2
http://marc.info/?l=bugtraq&m=141390017113542&w=2
http://seclists.org/fulldisclosure/2014/Dec/23
http://secunia.com/advisories/58230
http://secunia.com/advisories/58915
http://secunia.com/advisories/59219
http://secunia.com/advisories/59315
http://secunia.com/advisories/59345
http://secunia.com/advisories/60536
http://security.gentoo.org/glsa/glsa-201408-12.xml
http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15320.html
http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGES
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/loggers/mod_log_config.c
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/loggers/mod_log_config.c?r1=1575394&r2=1575400&diff_format=h
http://www.apache.org/dist/httpd/CHANGES_2.4.9
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
http://www.securityfocus.com/archive/1/534161/100/0/threaded
http://www.securityfocus.com/bid/66303
http://www.ubuntu.com/usn/USN-2152-1
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
http://www-01.ibm.com/support/docview.wss?uid=swg21668973
http://www-01.ibm.com/support/docview.wss?uid=swg21676091
http://www-01.ibm.com/support/docview.wss?uid=swg21676092
http://blogs.oracle.com/sunsecurity/entry/multiple_input_validation_vulnerabilities_in1
http://httpd.apache.org/security/vulnerabilities_24.html
http://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
http://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E
http://puppet.com/security/cve/cve-2014-0098
http://support.apple.com/HT204659
http://support.apple.com/kb/HT6535

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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