CAN-2003-0543/0544 OpenSSL ASN.1 protocol crashes
Published Oct 1, 2003
5.0
MEDIUMCVSS 2.0
EPSS 6.92%
Description
OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1 inputs, which allows remote attackers to cause a denial of service (crash) via an SSL client certificate that causes OpenSSL to read past the end of a buffer when the long form is used.
Affected products
No data.
No data.
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
n/a
Fixed · RHSA-2003:293
Red Hat Enterprise Linux ES version 2.1
n/a
Fixed · RHSA-2003:293
Red Hat Enterprise Linux WS version 2.1
n/a
Fixed · RHSA-2003:293
Red Hat Linux 7.1
n/a
Fixed · RHSA-2003:291
Red Hat Linux 7.2
n/a
Fixed · RHSA-2003:291
Red Hat Linux 7.3
n/a
Fixed · RHSA-2003:291
Red Hat Linux 8.0
n/a
Fixed · RHSA-2003:291
Red Hat Linux 9
n/a
Fixed · RHSA-2003:292
Red Hat Linux Advanced Workstation 2.1
n/a
Fixed · RHSA-2003:293
Red Hat Stronghold 4
n/a
Fixed · RHSA-2003:290
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | n/a | Fixed | RHSA-2003:293 |
| Red Hat Enterprise Linux ES version 2.1 | n/a | Fixed | RHSA-2003:293 |
| Red Hat Enterprise Linux WS version 2.1 | n/a | Fixed | RHSA-2003:293 |
| Red Hat Linux 7.1 | n/a | Fixed | RHSA-2003:291 |
| Red Hat Linux 7.2 | n/a | Fixed | RHSA-2003:291 |
| Red Hat Linux 7.3 | n/a | Fixed | RHSA-2003:291 |
| Red Hat Linux 8.0 | n/a | Fixed | RHSA-2003:291 |
| Red Hat Linux 9 | n/a | Fixed | RHSA-2003:292 |
| Red Hat Linux Advanced Workstation 2.1 | n/a | Fixed | RHSA-2003:293 |
| Red Hat Stronghold 4 | n/a | Fixed | RHSA-2003:290 |
No package ranges for this CVE.
Remediation
Red Hat statement
For Red Hat Enterprise Linux 2.1 OpenSSL packages (openssl, openssl096, openssl095a) issue was addressed via RHSA-2003:293. The OpenSSL packages in Red Hat Enterprise Linux 3 and 4 (openssl, openssl096b) contain a backported patch since their initial release. The OpenSSL packages in Red Hat Enterprise Linux 5 are based on fixed upstream release (openssl), or contain backported patch since their initial release (openssl097a).
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.92% (0.06922) | 93.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.17% (0.06173) | 92.55th | v5 (v2026.06.15) |
| Dec 28, 2025 | 26.19% (0.26187) | 96.12th | v4 (v2025.03.14) |
| Dec 27, 2025 | 20.08% (0.20083) | 95.32th | v4 (v2025.03.14) |
| Oct 28, 2025 | 26.19% (0.26187) | 96.05th | v4 (v2025.03.14) |
| Oct 27, 2025 | 20.08% (0.20083) | 95.25th | v4 (v2025.03.14) |
| Oct 1, 2025 | 26.19% (0.26187) | 96.14th | v4 (v2025.03.14) |
| Jul 30, 2025 | 20.08% (0.20083) | 95.25th | v4 (v2025.03.14) |
| Mar 30, 2025 | 25.24% (0.25236) | 95.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 29.87% (0.29874) | 94.70th | v4 (v2025.03.14) |
| Mar 17, 2025 | 25.24% (0.25236) | 95.74th | v4 (v2025.03.14) |
| Dec 17, 2024 | 18.96% (0.18962) | 96.24th | v3 (v2023.03.01) |
| Feb 8, 2024 | 37.85% (0.37847) | 97.07th | v3 (v2023.03.01) |
| Oct 16, 2023 | 30.91% (0.30907) | 96.43th | v3 (v2023.03.01) |
| Apr 8, 2023 | 23.72% (0.23717) | 95.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 15.85% (0.15847) | 95.01th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.58% (0.06584) | 91.39th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.58% (0.06584) | 90.55th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.58% (0.06584) | 78.46th | v2 (v2022.01.01) |
No CWE recorded.
References (20)
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104893 x_refsource_CONFIRM
- http://secunia.com/advisories/22249 third-party-advisoryx_refsource_SECUNIA
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-201029-1 vendor-advisoryx_refsource_SUNALERT
- http://www-1.ibm.com/support/docview.wss?uid=swg21247112 x_refsource_CONFIRM
- http://www.cert.org/advisories/CA-2003-26.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.debian.org/security/2003/dsa-393 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2003/dsa-394 vendor-advisoryx_refsource_DEBIAN
- http://www.kb.cert.org/vuls/id/380864 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.linuxsecurity.com/advisories/engarde_advisory-3693.html vendor-advisoryx_refsource_ENGARDE
- http://www.redhat.com/support/errata/RHSA-2003-291.html vendor-advisoryx_refsource_REDHATPatchVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2003-292.html vendor-advisoryx_refsource_REDHATPatchVendor Advisory
- http://www.securityfocus.com/bid/8732 vdb-entryx_refsource_BID
- http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm x_refsource_MISC
- http://www.vupen.com/english/advisories/2006/3900 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2003-0544 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=104893 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/43041 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2003-0544
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4574 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2003-0544
Change history (0)
No recorded changes yet.