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7.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Privoxy up to 3.0.23 and classified as problematic. The affected element is the function remove_chunked_transfer_coding of the file filters.c of the component Chunked Encoding Handler. This manipulation causes input validation. This vulnerability appears as CVE-2016-1982. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Privoxy up to 3.0.23. Affected by this vulnerability is the function remove_chunked_transfer_coding of the file filters.c of the component Chunked Encoding Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

The remove_chunked_transfer_coding function in filters.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (invalid read and crash) via crafted chunk-encoded content.

The weakness was presented 01/27/2016 by Fabian Keil (Website). The advisory is shared at privoxy.org. This vulnerability is known as CVE-2016-1982 since 01/20/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

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 82806†) and Vulnerability Center (SBV-56606†). See VDB-68633, VDB-68634 and VDB-80714 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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 🔍
01/22/2016 +2 days 🔍
01/24/2016 +2 days 🔍
01/24/2016 +0 days 🔍
01/26/2016 +2 days 🔍
01/27/2016 +0 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-2016-1982 (🔍)
GCVE (CVE): GCVE-0-2016-1982
GCVE (VulDB): GCVE-100-80713
SecurityFocus: 82806 - Privoxy CVE-2016-1982 Remote Denial of Service Vulnerability
Vulnerability Center: 56606 - Privoxy before 3.0.24 Remote DoS in Filters.c, Medium

See also: 🔍

Entryinfo

Created: 01/28/2016 10:20
Updated: 07/06/2022 14:14
Changes: 01/28/2016 10:20 (71), 08/22/2018 09:58 (14), 07/06/2022 14:14 (4)
Complete: 🔍
Cache ID: 216:808:103

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