RCE in Stunnel

CVE-2013-1762

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.

Vulnerability class: RCE (Remote Code Execution)

Published · last modified .

CVSS v2 metric

CVSS v2 base score 6.6 (Medium). Vector: AV:N/AC:H/Au:N/C:P/I:P/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.029 (86.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2013-1762: held from 0.029 to 0.029.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

  • Stunnel — versions 4.21, 4.22, 4.23

Weakness classification (CWE)

References