Zero-day Vulnerability Database

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Zero-day vulnerabilities discovered: 2

Denial of service in Apache HTTP Server
CVE-2011-3192

Resource exhaustion

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to an error in the ByteRange filter when processing malicious requests in Apache HTTP server. A remote attacker can send a specially crafted HTTP request containing an overly large Range header, exhaust all available memory resources and trigger the application to crash.

Successful exploitation of the vulnerability results in denial service on the vulnerable system.

Note: the vulnerability was being actively exploited.
i

The vulnerability is known as "Apache Killer".

Software: Apache HTTP Server

The vulnerability is known as "Apache Killer".

Links:

http://httpd.apache.org/security/CVE-2011-3192.txt
https://lists.opensuse.org/opensuse-security-announce/2011-09/msg00006.html
http://www.gossamer-threads.com/lists/apache/dev/401638
http://mail-archives.apache.org/mod_mbox/httpd-announce/201108.mbox/%3C20110824161640.122D387DD@mino...
http://mail-archives.apache.org/mod_mbox/httpd-announce/201108.mbox/%3C20110826103531.998348F82@mino...
http://www.oracle.com/technetwork/topics/security/alert-cve-2011-3192-485304.html
https://blogs.oracle.com/security/entry/security_alert_for_cve_2011
https://wiki.apache.org/httpd/CVE-2011-3192
http://dino.ciuffetti.info/2011/08/cve-2011-3192-apachekiller/

Full report >

Denial of service in Apache Subversion
CVE-2011-1752

Null pointer dereference

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to NULL pointer dereference in the mod_dav_svn module when processing baselined WebDAV resources. A remote attacker can create a specially crafted request, send it to the victim and cause the Subversion server to crash.

Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Note: the vulnerability was being actively exploited.
i

The vulnerability was discovered by Joe Schaefer.

Software: Subversion

The vulnerability was discovered by Joe Schaefer.

Links:

http://subversion.apache.org/security/CVE-2011-1752-advisory.txt
https://lists.fedoraproject.org/pipermail/package-announce/2011-June/061913.html
https://www.ubuntu.com/usn/USN-1144-1/
https://lwn.net/Articles/446888/
http://ovaldb.altx-soft.ru/Definition.aspx?id=oval:com.altx-soft.nix:def:2140
https://groups.google.com/forum/#!topic/visualsvn/K6IsJpMWaA8

Full report >

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.