CVE-2021-3694 : LedgerSMB does not sufficiently HTML-encode error messages sent to the browser. By sending a specially crafted URL to an

LedgerSMB does not sufficiently HTML-encode error messages sent to the browser. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure.

Published 2021-08-23 13:15:08

Updated 2021-08-27 15:02:30

Source huntr.dev

View at NVD, CVE.org

Vulnerability category: Cross site scripting (XSS)Execute codeInformation leak

Products affected by CVE-2021-3694

Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 11.0
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.5.0 and up to, including, (<=) 1.5.30
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.3.0 and up to, including, (<=) 1.3.47
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.7.0 and up to, including, (<=) 1.7.32
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.1.0 and up to, including, (<=) 1.1.12
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.4.0 and up to, including, (<=) 1.4.42
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.6.0 and up to, including, (<=) 1.6.33
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.8.0 and up to, including, (<=) 1.8.17
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions
Ledgersmb » Ledgersmb
Versions from including (>=) 1.2.0 and up to, including, (<=) 1.2.26
cpe:2.3:a:ledgersmb:ledgersmb:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-3694

EPSS FAQ

2.57%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 90 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-3694

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.6	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H	2.8	6.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: High Integrity: High Availability: High
8.2	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N	2.8	4.7	huntr.dev
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: High Integrity: Low Availability: None

CWE ids for CVE-2021-3694

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Assigned by:
- nvd@nist.gov (Primary)
- security@huntr.dev (Secondary)

References for CVE-2021-3694

https://ledgersmb.org/cve-2021-3694-cross-site-scripting

Security advisory for CVE-2021-3694 (Cross site scripting) | LedgerSMB
Vendor Advisory
https://www.debian.org/security/2021/dsa-4962

Debian -- Security Information -- DSA-4962-1 ledgersmb
Third Party Advisory

CVEs referencing this url
https://huntr.dev/bounties/ef7f4cf7-3a81-4516-b261-f5b6ac21430c

huntr: Cross-site Scripting (XSS) - Reflected Perl Vulnerability in ledgersmb
Third Party Advisory
https://github.com/ledgersmb/ledgersmb/commit/98fa476d46a4a7e5e9492ed69b4fa190be5547fc

Merge pull request #5744 from ledgersmb/html-escape-error-messages · ledgersmb/LedgerSMB@98fa476 · GitHub
Patch;Third Party Advisory

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Vulnerability Details : CVE-2021-3694

Products affected by CVE-2021-3694

Exploit prediction scoring system (EPSS) score for CVE-2021-3694

CVSS scores for CVE-2021-3694

CWE ids for CVE-2021-3694

References for CVE-2021-3694