| Summary: | <www-servers/monkeyd-1.2.2 : Denial of Service Vulnerability (CVE-2013-3724) | ||
|---|---|---|---|
| Product: | Gentoo Security | Reporter: | Agostino Sarubbo <ago> |
| Component: | Vulnerabilities | Assignee: | Gentoo Security <security> |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | CC: | blueness |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://www.1337day.com/exploit/20830 | ||
| Whiteboard: | B3 [glsa] | ||
| Package list: | Runtime testing required: | --- | |
| Bug Depends on: | |||
| Bug Blocks: | 472400 | ||
This is fixed in the recent versions I added to the tree, but there are still more security bugs open on monkeyd. We should not wait any longer.
TARGET: "amd64 arm ppc ppc64 x86"
Note this also takes care of bugs #472400 and #472644. It does not take care of a couple other security issues.
amd64 stable x86 stable ppc stable ppc64 stable arm stable Note that monkeyd needs a GLSA anyway, bug 472400 is a B2. GLSA vote: yes CVE-2013-3724 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-3724): The mk_request_header_process function in mk_request.c in Monkey 1.1.1 allows remote attackers to cause a denial of service (thread crash and service outage) via a '\0' character in an HTTP request. Added to existing request. This issue was resolved and addressed in GLSA 201309-17 at http://security.gentoo.org/glsa/glsa-201309-17.xml by GLSA coordinator Chris Reffett (creffett). |
From ${URL} : Title: ====== Monkey HTTPD 1.1.1 - Denial of Service Vulnerability Date: ===== 2013-05-28 References: =========== http://bugs.monkey-project.com/ticket/181 Introduction: ============= Monkey is a lightweight and powerful web server for GNU/Linux. It has been designed to be very scalable with low memory and CPU consumption, the perfect solution for embedded devices. Made for ARM, x86 and x64. Abstract: ========= The vulnerability is a denial of service which is caused by sending a null byte in an HTTP request to the web server. Report-Timeline: ================ 2013-05-23: Discovered vulnerability via fuzzing 2013-05-25: Vendor Notification 2013-05-26: Vendor Response/Feedback 2013-05-27: Vendor Fix/Patch 2013-05-28: PublicDisclosure Status: ======== Published Affected Products: ================== Monkey HTTPD - version 1.1.1 Exploitation-Technique: ======================= Remote Details: ======== A bug discovered in Monkey's HTTP parser allows an attacker to cause a segmentation fault in one of the daemon's threads using a specially crafted request containing a null byte. An attacker can crash all the available threads by sending the specially crafted request multiple times, rendering the server useless for legitimate users. Proof of Concept: ================= The vulnerability can be exploited by remote attacker without any special privileges. The placement of the null byte within the request does not seem to have any effect on the result. The null byte may even be used instead of an HTTP method such as, GET. Below is an example of how this bug can be manually triggered: ruby -e 'puts "GET /\x00 HTTP/1.1\r\n\r\n"'|netcat localhost 2001 Solution: ========= This vulnerability has been fixed for the 1.2.0 release. Risk: ===== The security risk of the redirection vulnerability is estimated as low(+). @maintainer(s): after the bump, in case we need to stabilize the package, please say explicitly if it is ready for the stabilization or not.