Spoofing attack in LedgerSMB - CVE-2021-3731

Vulnerability identifier: #VU56096

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-3731

CWE-ID: CWE-451

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can perform clickjacking attack.

LedgerSMB
ledgersmb (Debian package)
ledgersmb (Ubuntu package)
Ubuntu

Install updates from vendor's website.

LedgerSMB - addressed in versions 1.7.33, 1.8.18
ledgersmb (Debian package) - addressed in versions 1.6.9+ds-1+deb10u2, 1.6.9+ds-2+deb11u2
ledgersmb (Ubuntu package) - addressed in versions 1.3.46-1ubuntu0.1~esm1, 1.4.42+ds-1ubuntu0.1~esm1, 1.6.9+ds-1ubuntu0.1, 1.6.9+ds-1ubuntu0.1+esm1, 1.6.9+ds-2ubuntu0.1, 1.6.33+ds-1ubuntu0.1, 1.6.33+ds-2.1ubuntu0.1, 1.6.33+ds-2.2ubuntu0.25.04.1

• https://huntr.dev/bounties/5664331d-f5f8-4412-8566-408f8655888a
• https://ledgersmb.org/cve-2021-3731-clickjacking

• Multiple vulnerabilities in LedgerSMB
• Debian update for ledgersmb
• Ubuntu update for ledgersmb
• Ubuntu update for ledgersmb