Python Software Foundation BaseHTTPServer 0.6 HTTP Request denial of service
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
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6.9 | $0-$5k | 0.00 |
A vulnerability was found in Python Software Foundation BaseHTTPServer 0.6 (Programming Language Software). It has been classified as critical. This affects an unknown function of the component HTTP Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.
The weakness was published 01/07/2013 by Richard Clifford as DoS in Python's BaseHTTP 0.6 as not defined mail (OSVDB). It is possible to read the advisory at osvdb.org. The vendor was not involved in the public release. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:
The issue comes when there is a malformed HTTP request not ending in a new line, it causes the server to hang, not timeout and causes a DoS.
A public exploit has been developed by Richard Clifford in ANSI C and been published immediately after the advisory. The exploit is shared for download at osvdb.org. It is declared as proof-of-concept. The code used by the exploit is:
const char *headers = "GET / HTTP/1.1\r\nHost: example.com:6789\r\n";
It is possible to mitigate the weakness by firewalling Web Server Port.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 6.9
VulDB Base Score: 7.5
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Exploiting
Class: Denial of serviceCWE: CWE-404
ATT&CK: T1499
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Richard Clifford
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: FirewallStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Firewalling: 🔍
Timeline
01/07/2013 🔍01/07/2013 🔍
01/28/2014 🔍
03/29/2019 🔍
Sources
Advisory: DoS in Python's BaseHTTP 0.6⛔Researcher: Richard Clifford
Status: Not defined
OSVDB: 102516
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 01/28/2014 09:12Updated: 03/29/2019 13:54
Changes: 01/28/2014 09:12 (51), 03/29/2019 13:54 (2)
Complete: 🔍
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