spiffy-cgi-handlers up to 0.4 Environment Variable Proxy data processing

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in spiffy-cgi-handlers up to 0.4. Affected by this vulnerability is an unknown functionality. The manipulation as part of Environment Variable leads to data processing (Proxy). This vulnerability is uniquely identified as CVE-2016-6286. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in spiffy-cgi-handlers up to 0.4 and classified as critical. This issue affects an unknown functionality. The manipulation as part of a Environment Variable leads to a data processing vulnerability (Proxy). Using CWE to declare the problem leads to CWE-19. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The "spiffy-cgi-handlers" egg would convert a nonexistent "Proxy" header to the HTTP_PROXY environment variable, which would allow attackers to direct CGI programs which use this environment variable to use an attacker-specified HTTP proxy server (also known as a "httpoxy" attack). This affects all versions of spiffy-cgi-handlers before 0.5.

The bug was discovered 01/10/2017. The weakness was disclosed 01/10/2017 by Peter Bex (Website). The advisory is shared at lists.gnu.org. The identification of this vulnerability is CVE-2016-6286 since 07/22/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92105†). The entry VDB-95118 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• spiffy-cgi-handlers

Version

• 0.1
• 0.2
• 0.3
• 0.4

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Proxy
Class: Data processing / Proxy
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: spiffy-cgi-handlers 0.5

Timelineinfo

07/21/2016 🔍
07/22/2016 +1 days 🔍
01/10/2017 +172 days 🔍
01/10/2017 +0 days 🔍
01/10/2017 +0 days 🔍
01/11/2017 +1 days 🔍
04/20/2025 +3021 days 🔍

Sourcesinfo

Advisory: lists.gnu.org
Researcher: Peter Bex
Status: Confirmed

CVE: CVE-2016-6286 (🔍)
GCVE (CVE): GCVE-0-2016-6286
GCVE (VulDB): GCVE-100-95117
SecurityFocus: 92105 - Multiple CHICKEN Egg Products Multiple Security Bypass Vulnerabilities
OSVDB: - CVE-2016-6286 - CHICKEN - spiffy-cgi-handlers - httpoxy Issue

See also: 🔍

Entryinfo

Created: 01/11/2017 09:36
Updated: 04/20/2025 14:23
Changes: 01/11/2017 09:36 (58), 07/18/2020 16:30 (7), 04/20/2025 14:23 (20)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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