CVE-2013-1762: stunnel Improper Control of Generation of Code

Modified

AliasesRHSA-2013:0714DEBIAN-CVE-2013-1762DSA-2664-1

Published 08-03-2013Last modified 06-08-2024

Vulnerability summary

CVE-2013-1762 is a medium (CVSS 6.6) Improper Control of Generation of Code vulnerability in stunnel. EPSS estimates a 2.93% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 6.6, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

6.6/10

010

Medium · v2.0 (NVD)

EPSS score

2.93%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1

OPENSUSE-SU-2024:10289-1

Timeline

08-03-2013
PublishedVulnerability first disclosed.
06-08-2024
Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

v2.06.6

EPSS trend

Probability

2.93%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.93% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-94Improper Control of Generation of CodeThe product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Redhat2 products

stunnel< 0:4.29-3.el6_4
stunnel-debuginfo< 0:4.29-3.el6_4

Debian1 product

stunnel4< 3:4.53-1.1 | < 3:4.29-1+squeeze1

Stunnel1 product

stunnel≤ 4.54 | 4.21 | 4.22 | 4.23 | 4.24 | 4.25 | 4.26 | 4.27 | 4.28 | 4.29 | 4.30 | 4.31 | 4.32 | 4.33 | 4.34 | 4.35 | 4.36 | 4.37 | 4.38 | 4.39 | 4.40 | 4.41 | 4.42 | 4.43 | 4.44 | 4.45 | 4.46 | 4.47 | 4.48 | 4.49 | 4.50 | 4.51 | 4.52 | 4.53

3 vendors · 4 products