CVE-2013-1762

mediumpriority · track · 27EPSS 0.029 · 87 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.93% (87th) EPSS

CVSS 6.6 · medium

Is it mine?

64 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedstunnel-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Desktop (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Workstation (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.src as a component of Red Hat Enterprise Linux Desktop (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.src as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.src as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.src as a component of Red Hat Enterprise Linux Workstation (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Desktop (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Desktop (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.i686 as a component of Red Hat Enterprise Linux Workstation (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Desktop (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714
Fixedstunnel-debuginfo-0:4.29-3.el6_4.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0714

cvss

Technical severity, 0–10. One row per scoring source.

6.6

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.6mediumAV:N/AC:H/Au:N/C:P/I:P/A:Cprimary · NVD / NIST USexploitability 4.9 · impact 8.5

v2.06.6mediumAV:N/AC:H/Au:N/C:P/I:P/A:Csecondary · FSTEC (BDU) RU

v2.05.6mediumAV:N/AC:H/Au:N/C:P/I:P/A:C/E:Usecondary · CVSS-BT (t0sche)

v2.05.1mediumAV:N/AC:H/Au:N/C:P/I:P/A:Psecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94US

affected products (64)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Gentoo Foundation Inc. Gentoo Linux≤ 20140826fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ Desktop 6fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ HPC Node 6fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ Server 6fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ Server 6.4fstec_bduRU
The CentOS Project CentOS≤ 6fstec_bduRU
ООО «Инновационные Технологии в Бизнесе» EMIAS OS≤ 1.0fstec_bduRU
stunnel stunnel≤ 4.54nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.21nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.22nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.23nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.24nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.25nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.26nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.27nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.28nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.29nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.30nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*
stunnel stunnel= 4.31nvdUScpe:2.3:a:stunnel:stunnel:*:*:*:*:*:*:*:*

showing 20 of 64

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2013:0714Red Hat Security Advisory: stunnel security update2013-04-08csaf · redhat_csafUS
An updated stunnel package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

also known as (11)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd redhat_csaf NVD CVE.org MITRE

published 2013-03-08modified 2026-06-16

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references (14)

External citations — patches, advisories, analysis.

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