CVE-2021-3882
Published on: 10/14/2021 12:00:00 AM UTC
Last Modified on: 10/20/2021 06:02:00 PM UTC
CVE-2021-3882 - advisory for 7061d97a-98a5-495a-8ba0-3a4c66091e9d
Source: Mitre Source: Nist Print: PDF
Certain versions of Ledgersmb from Ledgersmb contain the following vulnerability:
LedgerSMB does not set the 'Secure' attribute on the session authorization cookie when the client uses HTTPS and the LedgerSMB server is behind a reverse proxy. By tricking a user to use an unencrypted connection (HTTP), an attacker may be able to obtain the authentication data by capturing network traffic. LedgerSMB 1.8 and newer switched from Basic authentication to using cookie authentication with encrypted cookies. Although an attacker can't access the information inside the cookie, nor the password of the user, possession of the cookie is enough to access the application as the user from which the cookie has been obtained. In order for the attacker to obtain the cookie, first of all the server must be configured to respond to unencrypted requests, the attacker must be suitably positioned to eavesdrop on the network traffic between the client and the server *and* the user must be tricked into using unencrypted HTTP traffic. Proper audit control and separation of duties limit Integrity impact of the attack vector. Users of LedgerSMB 1.8 are urged to upgrade to known-fixed versions. Users of LedgerSMB 1.7 or 1.9 are unaffected by this vulnerability and don't need to take action. As a workaround, users may configure their Apache or Nginx reverse proxy to add the Secure attribute at the network boundary instead of relying on LedgerSMB. For Apache, please refer to the 'Header always edit' configuration command in the mod_headers module. For Nginx, please refer to the 'proxy_cookie_flags' configuration command.
- CVE-2021-3882 has been assigned by
[email protected] to track the vulnerability - currently rated as MEDIUM severity.
- Affected Vendor/Software:
ledgersmb - ledgersmb/ledgersmb version >= 1.8.0
- Affected Vendor/Software:
ledgersmb - ledgersmb/ledgersmb version <= 1.8.21
CVSS3 Score: 6.8 - MEDIUM
Attack Vector ⓘ |
Attack Complexity |
Privileges Required |
User Interaction |
---|---|---|---|
NETWORK | HIGH | NONE | REQUIRED |
Scope | Confidentiality Impact |
Integrity Impact |
Availability Impact |
UNCHANGED | HIGH | HIGH | NONE |
CVSS2 Score: 4 - MEDIUM
Access Vector ⓘ |
Access Complexity |
Authentication |
---|---|---|
NETWORK | HIGH | NONE |
Confidentiality Impact |
Integrity Impact |
Availability Impact |
PARTIAL | PARTIAL | NONE |
CVE References
Description | Tags ⓘ | Link |
---|---|---|
Page not found | LedgerSMB | ledgersmb.org text/html Inactive LinkNot Archived |
![]() |
Use HTTPS environment setting to detect https connections · ledgersmb/[email protected] · GitHub | github.com text/html |
![]() |
huntr: Disclose & Fix Security Vulnerabilities in Open Source | huntr.dev text/html Inactive LinkNot Archived |
![]() |
Known Affected Configurations (CPE V2.3)
Type | Vendor | Product | Version | Update | Edition | Language |
---|---|---|---|---|---|---|
Application | Ledgersmb | Ledgersmb | 1.8.0 | - | All | All |
- cpe:2.3:a:ledgersmb:ledgersmb:1.8.0:-:*:*:*:*:*:*:
Social Mentions
Source | Title | Posted (UTC) |
---|---|---|
![]() |
CVE-2021-3882 : LedgerSMB does not set the 'Secure' attribute on the session authorization cookie when the client u… twitter.com/i/web/status/1… | 2021-10-14 08:24:44 |