CVE-2003-0543

OpenSSL ASN.1 < 0.9.6j/0.9.7b - Brute Forcer for Parsing Bugs

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Desbordamiento de enteros en OpenSSL 0.9.6 y 0.9.7 permite a atacantes remotos causar una denegación de servicio (caída) mediante un certificado SSL de cliente con ciertos valores en la etiqueta ASN.1.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2003-07-14 CVE Reserved
2003-10-01 CVE Published
2003-10-09 First Exploit
2024-08-08 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (19)

URL	Tag	Source
http://secunia.com/advisories/22249	Third Party Advisory
http://www-1.ibm.com/support/docview.wss?uid=swg21247112	X_refsource_confirm
http://www.cert.org/advisories/CA-2003-26.html	Third Party Advisory
http://www.kb.cert.org/vuls/id/255484	Third Party Advisory
http://www.securityfocus.com/bid/8732	Vdb Entry
http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm	X_refsource_misc
http://www.vupen.com/english/advisories/2006/3900	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4254	Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5292	Signature

URL	Date	SRC
https://www.exploit-db.com/exploits/146	2003-10-09

URL	Date	SRC
http://www.redhat.com/support/errata/RHSA-2003-291.html	2018-05-03

URL	Date	SRC
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104893	2018-05-03
http://sunsolve.sun.com/search/document.do?assetkey=1-66-201029-1	2018-05-03
http://www.debian.org/security/2003/dsa-393	2018-05-03
http://www.debian.org/security/2003/dsa-394	2018-05-03
http://www.linuxsecurity.com/advisories/engarde_advisory-3693.html	2018-05-03
http://www.redhat.com/support/errata/RHSA-2003-292.html	2018-05-03
https://access.redhat.com/security/cve/CVE-2003-0543	2003-09-30
https://bugzilla.redhat.com/show_bug.cgi?id=104893	2003-09-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openssl Search vendor "Openssl"		Openssl Search vendor "Openssl" for product "Openssl"				0.9.6 Search vendor "Openssl" for product "Openssl" and version "0.9.6"		-		Affected
Openssl Search vendor "Openssl"		Openssl Search vendor "Openssl" for product "Openssl"				0.9.7 Search vendor "Openssl" for product "Openssl" and version "0.9.7"		-		Affected