What’s Vulnerable › Vulnerabilities

CVE-2003-0740

• Severity: medium (CVSS 4.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2003-10-20 · updated 2026-06-16

Description

Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(), which allows local users to hijack the Stunnel server.

Affected products

• stunnel: 3.3, 3.4a, 3.7, 3.8, 3.9, 3.10 (+17)

References

• http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000736
• http://marc.info/?l=bugtraq&m=106260760211958&w=2
• http://www.mandriva.com/security/advisories?name=MDKSA-2003:108
• http://www.redhat.com/support/errata/RHSA-2003-297.html
• http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000736
• http://marc.info/?l=bugtraq&m=106260760211958&w=2
• http://www.mandriva.com/security/advisories?name=MDKSA-2003:108
• http://www.redhat.com/support/errata/RHSA-2003-297.html

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