CVE-2003-0543 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 27.4% (pctl 98)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 27.37% — more likely to be exploited than 98% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2003-11-17 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| openssl | openssl |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | OpenSSL ASN.1 < 0.9.6j/0.9.7b - Brute Forcer for Parsing Bugs | 2003-10-09 |
References
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104893
- http://secunia.com/advisories/22249
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-201029-1
- http://www-1.ibm.com/support/docview.wss?uid=swg21247112
- http://www.cert.org/advisories/CA-2003-26.html
- http://www.debian.org/security/2003/dsa-393
- http://www.debian.org/security/2003/dsa-394
- http://www.kb.cert.org/vuls/id/255484
- http://www.linuxsecurity.com/advisories/engarde_advisory-3693.html
- http://www.redhat.com/support/errata/RHSA-2003-291.html
- http://www.redhat.com/support/errata/RHSA-2003-292.html
- http://www.securityfocus.com/bid/8732
- http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm
- http://www.vupen.com/english/advisories/2006/3900
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4254
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5292
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104893
- http://secunia.com/advisories/22249
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-201029-1
- http://www-1.ibm.com/support/docview.wss?uid=swg21247112
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