OpenSSL ASN.1 inputs SSL client certificate denial of service
| openssl-asn1-sslclient-dos (43041) |  Low Risk |
Description:
OpenSSL is vulnerable to a denial of service caused by an integer overflow error when handling certain ASN.1 inputs. A remote attacker could exploit this vulnerability using a specially-crafted SSL client certificate to crash the application.
Platforms Affected:
- OpenSSL, OpenSSL 0.9.6
- OpenSSL, OpenSSL 0.9.7
- SuSE, SuSE eMail Server III
- SuSE, SuSE Linux 7.2
- SuSE, SuSE Linux 7.3
- SuSE, SuSE Linux 8.0
- SuSE, SuSE Linux 8.1
- SuSE, SuSE Linux 8.2
- SuSE, SuSE Linux 9.0
- SuSE, SuSE Linux Connectivity Server
- SuSE, SuSE Linux Database Server
- SuSE, SuSE Linux Enterprise Server 7.0
- SuSE, SuSE Linux Office Server
Remedy:
Refer to OpenPKG-SA-2003.044 for patch, upgrade or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- CERT Advisory CA-2003-26, Multiple Vulnerabilities in SSL/TLS Implementations at http://www.cert.org/advisories/CA-2003-26.html.
- IBM Support & downloads, Vulnerability Detected: 170.23.146.40:443 - OpenSSL Overflow Via Invalid Certificate Passing at http://www-1.ibm.com/support/docview.wss?uid=swg21247112.
- OpenPKG-SA-2003.044, Cryptography and SSL/TLS Toolkit at http://www.openpkg.com/security/advisories/OpenPKG-SA-2003.044.html.
- Red Hat Bugzilla Bug 104893, CAN-2003-0543/0544 OpenSSL ASN.1 protocol crashes at https://bugzilla.redhat.com/show_bug.cgi?id=104893.
- BID-8732: OpenSSL ASN.1 Parsing Vulnerabilities
- CVE-2003-0544: 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.
- RHSA-2003-293: openssl security update
- SA22249: IBM Rational RequisitePro OpenSSL Vulnerability
- SUSE-SA:2003:043: openssl: remote denial-of-service
- US-CERT VU#380864: OpenSSL contains integer overflow handling ASN.1 tags (2)
- VUPEN/ADV-2006-3900: IBM Rational RequisitePro Security Update Fixes OpenSSL Buffer Overflow Issue
Reported:
Sep 23, 2003
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