9.6
CRITICAL
CVE-2021-3693
LedgerSMB DOM Injection Vulnerability
Description

LedgerSMB does not check the origin of HTML fragments merged into the browser's DOM. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure.

INFO

Published Date :

Aug. 23, 2021, 1:15 p.m.

Last Modified :

Aug. 27, 2021, 3:01 p.m.

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-3693 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Ledgersmb ledgersmb
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-3693.

URL Resource
https://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667 Third Party Advisory
https://ledgersmb.org/cve-2021-3693-cross-site-scripting Patch Vendor Advisory
https://www.debian.org/security/2021/dsa-4962 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-3693 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-3693 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Aug. 27, 2021

    Action Type Old Value New Value
    Removed CWE NIST CWE-346
    Added CWE NIST CWE-79
  • Initial Analysis by [email protected]

    Aug. 27, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
    Changed Reference Type https://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667 No Types Assigned https://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667 Third Party Advisory
    Changed Reference Type https://ledgersmb.org/cve-2021-3693-cross-site-scripting No Types Assigned https://ledgersmb.org/cve-2021-3693-cross-site-scripting Patch, Vendor Advisory
    Changed Reference Type https://www.debian.org/security/2021/dsa-4962 No Types Assigned https://www.debian.org/security/2021/dsa-4962 Third Party Advisory
    Added CWE NIST CWE-346
    Added CPE Configuration OR *cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:* versions from (including) 1.5.0 up to (including) 1.5.30 *cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:* versions from (including) 1.6.0 up to (including) 1.6.33 *cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:* versions from (including) 1.7.0 up to (including) 1.7.32 *cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:* versions from (including) 1.8.0 up to (including) 1.8.17
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Aug. 24, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-4962 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3693 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3693 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.34 }} 0.12%

score

0.89897

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability