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.

A vulnerability classified as critical has been found in Privoxy 3.0.21. Affected is some unknown processing. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality.

The weakness was shared 01/07/2015 as confirmed mailinglist post (oss-sec). The advisory is available at This vulnerability is traded as CVE-2015-1031 since 01/10/2015. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 80871 (Debian DSA-3133-1 : 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.

Upgrading to version 3.0.22 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (99973) and Tenable (80871). The entries 68633, 68979 and 80713 are related to this item.




  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍



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

NVD Base Score: 🔍


Class: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 80871
Nessus Name: Debian DSA-3133-1 : privoxy - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703133
OpenVAS Name: Debian Security Advisory DSA 3133-1 (privoxy - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Privoxy 3.0.22


01/07/2015 🔍
01/07/2015 +0 days 🔍
01/07/2015 +0 days 🔍
01/07/2015 +0 days 🔍
01/10/2015 +3 days 🔍
01/19/2015 +9 days 🔍
01/21/2015 +2 days 🔍
02/10/2015 +20 days 🔍
02/23/2015 +13 days 🔍
03/02/2022 +2564 days 🔍


Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1031 (🔍)

X-Force: 99973 - Privoxy use-after-free code execution, High Risk
Vulnerability Center: 48701 - Privoxy before 3.0.22 Remote Code Execution due to Use After Free Vulnerability, High
SecurityFocus: 71993 - Privoxy CVE-2015-1031 Multiple Use After Free Remote Code Execution Vulnerabilities
Secunia: 62123 - Privoxy Multiple Vulnerabilities, Moderately Critical

See also: 🔍


Created: 01/19/2015 09:14 AM
Updated: 03/02/2022 03:51 PM
Changes: 01/19/2015 09:14 AM (66), 06/20/2017 08:47 AM (11), 03/02/2022 03:46 PM (3), 03/02/2022 03:51 PM (1)
Complete: 🔍


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