CVE-2013-1762

critical

Description

stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not correctly perform integer conversion, which allows remote proxy servers to execute arbitrary code via a crafted request that triggers a buffer overflow.

References

https://www.stunnel.org/CVE-2013-1762.html

https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0097

https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-1788

http://www.mandriva.com/security/advisories?name=MDVSA-2013:130

http://www.debian.org/security/2013/dsa-2664

http://rhn.redhat.com/errata/RHSA-2013-0714.html

Details

Source: Mitre, NVD

Published: 2013-03-08

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.0201