CAN-2003-0543/0544 OpenSSL ASN.1 protocol crashes
Published Oct 1, 2003
9.8
CRITICALCVSS 3.1
EPSS 87.50%
Description
Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an SSL client certificate with a certain invalid ASN.1 encoding.
Affected products
Remediation
Red Hat statement
Not vulnerable. The OpenSSL packages in Red Hat Enterprise Linux 2.1 were not affected by this issue. The OpenSSL packages in Red Hat Enterprise Linux 3 and 4 contain a backported patch since their initial release (openssl), or were not affected by this issue (openssl096b). 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 87.50% (0.87499) | 99.75th | v5 (v2026.06.15) |
| Aug 10, 2026 | 87.50% (0.87499) | 99.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 85.45% (0.85449) | 99.69th | v5 (v2026.06.15) |
| Dec 28, 2025 | 74.57% (0.74574) | 98.80th | v4 (v2025.03.14) |
| Dec 27, 2025 | 71.74% (0.71739) | 98.69th | v4 (v2025.03.14) |
| Oct 28, 2025 | 74.57% (0.74574) | 98.79th | v4 (v2025.03.14) |
| Oct 27, 2025 | 71.74% (0.71739) | 98.68th | v4 (v2025.03.14) |
| Oct 1, 2025 | 74.57% (0.74574) | 98.81th | v4 (v2025.03.14) |
| Jul 30, 2025 | 71.74% (0.71739) | 98.66th | v4 (v2025.03.14) |
| Mar 30, 2025 | 75.24% (0.75240) | 98.82th | v4 (v2025.03.14) |
| Mar 29, 2025 | 81.55% (0.81546) | 98.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 75.24% (0.75240) | 98.81th | v4 (v2025.03.14) |
| Dec 17, 2024 | 41.21% (0.41207) | 97.34th | v3 (v2023.03.01) |
| Jul 29, 2024 | 57.96% (0.57962) | 97.77th | v3 (v2023.03.01) |
| Feb 8, 2024 | 51.11% (0.51114) | 97.44th | v3 (v2023.03.01) |
| Feb 3, 2024 | 58.63% (0.58626) | 97.46th | v3 (v2023.03.01) |
| Oct 16, 2023 | 85.29% (0.85292) | 98.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 87.92% (0.87920) | 98.02th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.54% (0.07544) | 92.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.54% (0.07544) | 92.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.54% (0.07544) | 81.06th | v2 (v2022.01.01) |
References (14)
- http://secunia.com/advisories/22249 third-party-advisoryx_refsource_SECUNIABroken LinkVendor Advisory
- http://www-1.ibm.com/support/docview.wss?uid=swg21247112 x_refsource_CONFIRMBroken Link
- http://www.cert.org/advisories/CA-2003-26.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- http://www.debian.org/security/2003/dsa-394 vendor-advisoryx_refsource_DEBIANBroken Link
- http://www.kb.cert.org/vuls/id/935264 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.redhat.com/support/errata/RHSA-2003-292.html vendor-advisoryx_refsource_REDHATBroken LinkPatchVendor Advisory
- http://www.securityfocus.com/bid/8732 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm x_refsource_MISCBroken LinkPatchVendor Advisory
- http://www.vupen.com/english/advisories/2006/3900 vdb-entryx_refsource_VUPENBroken Link
- https://access.redhat.com/security/cve/CVE-2003-0545 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=104893 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2003-0545
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2590 vdb-entrysignaturex_refsource_OVALBroken Link
- https://www.cve.org/CVERecord?id=CVE-2003-0545
Change history (0)
No recorded changes yet.