VDB-216899 · CVE-2022-4721 · EUVD-2022-0258

ikus060 rdiffweb up to 2.5.4 special elements into a different plane (special element injection)

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.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in ikus060 rdiffweb up to 2.5.4. Affected by this issue is some unknown functionality. The manipulation leads to failure to sanitize special elements into a different plane (special element injection). This vulnerability is traded as CVE-2022-4721. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ikus060 rdiffweb up to 2.5.4. It has been rated as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a failure to sanitize special elements into a different plane (special element injection) vulnerability. Using CWE to declare the problem leads to CWE-75. The product does not adequately filter user-controlled input for special elements with control implications. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in GitHub repository ikus060/rdiffweb prior to 2.5.5.

The weakness was shared 12/27/2022. It is possible to read the advisory at huntr.dev. The identification of this vulnerability is CVE-2022-4721 since 12/23/2022. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.5.5 eliminates this vulnerability. Applying the patch 6afaae56a29536f0118b3380d296c416aa6d078d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-0258). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

ikus060

Name

rdiffweb

Version

License

open-source

Website

Product: https://github.com/ikus060/rdiffweb/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 6.6
CNA Vector (huntr.dev): 🔍

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: Failure to sanitize special elements into a different plane (special element injection)
CWE: CWE-75 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: rdiffweb 2.5.5
Patch: 6afaae56a29536f0118b3380d296c416aa6d078d

Timelineinfo

12/23/2022 🔍
12/27/2022 +4 days 🔍
12/27/2022 +0 days 🔍
03/09/2026 +1168 days 🔍

Sourcesinfo

Product: github.com

Advisory: 6afaae56a29536f0118b3380d296c416aa6d078d
Status: Confirmed

CVE: CVE-2022-4721 (🔍)
GCVE (CVE): GCVE-0-2022-4721
GCVE (VulDB): GCVE-100-216899
EUVD: 🔍

Entryinfo

Created: 12/27/2022 23:30
Updated: 03/09/2026 10:46
Changes: 12/27/2022 23:30 (50), 01/25/2023 08:40 (1), 01/25/2023 08:44 (11), 03/09/2026 10:46 (15)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.