VDB-189045 · CVE-2021-44541 · GCVE-0-2021-44541

Privoxy prior 3.0.33 process_encrypted_request_headers memory leak

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.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Privoxy and classified as problematic. Affected is the function process_encrypted_request_headers. Performing a manipulation results in memory leak. This vulnerability is known as CVE-2021-44541. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Privoxy. This affects the function process_encrypted_request_headers. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability.

The weakness was published 12/24/2021. The advisory is shared at privoxy.org. This vulnerability is uniquely identified as CVE-2021-44541 since 12/03/2021. Technical details are known, but no exploit is available.

Upgrading to version 3.0.33 eliminates this vulnerability. The upgrade is hosted for download at privoxy.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at privoxy.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Privoxy

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: Privoxy 3.0.33
Patch: privoxy.org

Timelineinfo

12/03/2021 🔍
12/24/2021 +21 days 🔍
12/24/2021 +0 days 🔍
12/27/2021 +3 days 🔍

Sourcesinfo

Advisory: privoxy.org
Status: Confirmed

CVE: CVE-2021-44541 (🔍)
GCVE (CVE): GCVE-0-2021-44541
GCVE (VulDB): GCVE-100-189045

Entryinfo

Created: 12/24/2021 08:21
Updated: 12/27/2021 08:37
Changes: 12/24/2021 08:21 (39), 12/27/2021 08:37 (1)
Complete: 🔍
Cache ID: 216::103