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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Privoxy up to 3.0.23 and classified as problematic. The impacted element is the function client_host of the file parsers.c of the component HTTP Host Header Handler. Such manipulation with the input [empty] leads to input validation. This vulnerability is traded as CVE-2016-1983. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Privoxy up to 3.0.23. Affected by this issue is the function client_host of the file parsers.c of the component HTTP Host Header Handler. The manipulation with the input value [empty] leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The client_host function in parsers.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (invalid read and crash) via an empty HTTP Host header.

The weakness was shared 01/27/2016 by Fabian Keil (Website). The advisory is available at privoxy.org. This vulnerability is handled as CVE-2016-1983 since 01/20/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 88105 (Debian DLA-398-1 : privoxy security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350040 (Amazon Linux Security Advisory for privoxy: ALAS-2016-663).

Upgrading to version 3.0.24 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88105), SecurityFocus (BID 81554†) and Vulnerability Center (SBV-56607†). The entry VDB-80713 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Privoxy

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18
• 3.0.19
• 3.0.20
• 3.0.21
• 3.0.22
• 3.0.23

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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

Class: Input validation
CWE: CWE-20
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

Nessus ID: 88105
Nessus Name: Debian DLA-398-1 : privoxy security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703460
OpenVAS Name: Debian Security Advisory DSA 3460-1 (privoxy - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Privoxy 3.0.24

Timelineinfo

01/20/2016 🔍
01/20/2016 +0 days 🔍
01/20/2016 +0 days 🔍
01/22/2016 +2 days 🔍
01/24/2016 +2 days 🔍
01/27/2016 +2 days 🔍
01/27/2016 +0 days 🔍
01/28/2016 +1 days 🔍
02/14/2016 +17 days 🔍
07/06/2022 +2333 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-29995fbd42
Researcher: Fabian Keil
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-1983 (🔍)
GCVE (CVE): GCVE-0-2016-1983
GCVE (VulDB): GCVE-100-80714
SecurityFocus: 81554 - Privoxy CVE-2016-1983 Security Bypass Vulnerability
Vulnerability Center: 56607 - Privoxy before 3.0.24 Remote DoS in Parsers.c, Medium

See also: 🔍

Entryinfo

Created: 01/28/2016 10:20
Updated: 07/06/2022 14:16
Changes: 01/28/2016 10:20 (72), 08/22/2018 09:58 (14), 07/06/2022 14:16 (4)
Complete: 🔍
Cache ID: 216:5B6:103

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