Torbot up to 3.x URL Validation torbot.modules.validators.validate_link redos

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Torbot up to 3.x. The impacted element is the function torbot.modules.validators.validate_link of the component URL Validation. The manipulation results in redos. This vulnerability was named CVE-2023-45813. The attack needs to be approached locally. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Torbot up to 3.x. It has been classified as problematic. Affected is the function torbot.modules.validators.validate_link of the component URL Validation. The manipulation with an unknown input leads to a redos vulnerability. CWE is classifying the issue as CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. This is going to have an impact on availability. CVE summarizes:

Torbot is an open source tor network intelligence tool. In affected versions the `torbot.modules.validators.validate_link function` uses the python-validators URL validation regex. This particular regular expression has an exponential complexity which allows an attacker to cause an application crash using a well-crafted argument. An attacker can use a well-crafted URL argument to exploit the vulnerability in the regular expression and cause a Denial of Service on the system. The validators file has been removed in version 4.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was presented 10/19/2023 as GHSA-72qw-p7hh-m3ff. The advisory is available at github.com. This vulnerability is traded as CVE-2023-45813 since 10/13/2023. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1449.003 by the MITRE ATT&CK project.

Upgrading to version 4.0.0 eliminates this vulnerability. Applying the patch ef6e06bc7785355b1701d5524eb4550441086ac4 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 4.6
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Torbot 4.0.0
Patch: ef6e06bc7785355b1701d5524eb4550441086ac4

Timelineinfo

10/13/2023 🔍
10/19/2023 +6 days 🔍
10/19/2023 +0 days 🔍
11/11/2023 +23 days 🔍

Sourcesinfo

Advisory: GHSA-72qw-p7hh-m3ff
Status: Confirmed

CVE: CVE-2023-45813 (🔍)
GCVE (CVE): GCVE-0-2023-45813
GCVE (VulDB): GCVE-100-242898

Entryinfo

Created: 10/19/2023 07:37
Updated: 11/11/2023 09:05
Changes: 10/19/2023 07:37 (52), 11/11/2023 09:05 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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