CVE-2003-0543

mediumpriority · track · 40EPSS 0.274 · 98 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

27.4% (98th) EPSS

CVSS 5 · medium

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

enisa_euvd · fstec_bdu · nvd · redhat_csaf

EPSS · scored 2026-10-27

Integer overflow in OpenSSL 0.9.6 and 0.9.7 allows remote attackers to cause a denial of service (crash) via an SSL client certificate with certain ASN.1 tag values.

remediations

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

A vendor fix is available.

FixedRed Hat Stronghold 4redhat_csaf
Updated Stronghold 4 packages are now available via the update agent service. Run the following command from the Stronghold 4 install root to upgrade an existing Stronghold 4 installation to the new package versions: $ bin/agent The Stronghold 4.0g patch release which contains these updated packages is also available from the download site. After upgrading Stronghold, the server must be completely restarted by running the following commands from the install root: $ bin/stop-server $ bin/start-server For more information on how to upgrade between releases of Stronghold 4, refer to http://stronghold.redhat.com/support/upgrade-sh4
https://access.redhat.com/errata/RHSA-2003:290

cvss

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

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 4.5–10

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.010criticalAV:N/AC:L/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v2.04.5mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-146OpenSSL ASN.1 < 0.9.6j/0.9.7b - Brute Forcer for Parsing Bugsfunctional · exploit_db

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Red Hat Inc. Red Hat Enterprise Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 3.0fstec_bduRU
openssl openssl= 0.9.6nvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.7nvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Red Hat Stronghold 4all versionsfixedredhat_csafUScpe:/a:redhat:stronghold:4

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2003:290Red Hat Security Advisory: mod_ssl, openssl security update for Stronghold2003-09-30csaf · redhat_csafUS
Updated versions of Stronghold 4 cross-platform are available that fix several security issues affecting OpenSSL and mod_ssl. A number of bug fixes and new features are also included.

also known as (9)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd fstec_bdu nvd redhat_csaf NVD CVE.org MITRE

published 2003-11-17modified 2026-06-16

references (32)

External citations — patches, advisories, analysis.

scry

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