OpenSSL ChangeCipherSpec denial of service
| openssl-changecipherspec-dos (50963) |  Medium Risk |
Description:
OpenSSL is vulnerable to a denial of service caused by the improper handling of ChangeCipherSpec DTLS packets in ssl/s3_pkt.c. By sending a ChangeCipherSpec packet to be processed before the ClientHello, a remote attacker could trigger a NULL pointer dereference which will cause the affected daemon to crash.
*CVSS:
| Base Score: | 6.8 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.3 |
| Exploitability: | Proof-of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of OpenSSL (0.9.8i or later), available from the OpenSSL Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- HPSBMA02492 SSRT100079: HP System Management Homepage (SMH) for Linux and Windows, Remote Cross Site Scripting (XSS), Denial of Service (DoS), Execution of Arbitrary Code, Unauthorized Access.
- OpenSSL Web site: OpenSSL: CVS Web Interface.
- OpenSSL Web site: #1679: DTLS: SegFault if ChangeCipherSpec is received before ClientHello.
- VMware Security Announcements: VMSA-2010-0004 ESX Service Console and vMA third party updates.
- BID-35174: OpenSSL 'ChangeCipherSpec' DTLS Packet Denial of Service Vulnerability
- BID-39632: HP System Management Homepage CVE-2010-1034 Unspecified Remote Vulnerability
- CVE-2009-1386: ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello.
- DSA-1888: openssl097 -- cryptographic weakness
- MDVSA-2009:237: openssl
- MDVSA-2009:238: openssl
- MDVSA-2009:310: openssl
- RHSA-2009-1335: Moderate: openssl security, bug fix, and enhancement update
- SA38794: VMware vMA Update for Multiple Packages
- SA38834: VMware ESX Server 4 Multiple Vulnerabilities
- SUSE-SR:2009:012: SUSE Security Summary Report
- USN-792-1: OpenSSL vulnerabilities
- VUPEN/ADV-2010-0528: VMware Products Multiple Code Execution and Security Bypass Issues
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 8.04 LTS
- Canonical Ubuntu 8.10
- Debian Debian Linux 4.0
- Debian Debian Linux 5.0
- HP System Management Homepage 6.0.0.95
- HP System Management Homepage 6.0.0.96
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- MandrakeSoft Mandrake Linux 2008.1 X86_64
- MandrakeSoft Mandrake Linux 2008.1
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- Mandriva Enterprise Server 5
- Mandriva Enterprise Server 5 X86_64
- Mandriva Linux 2009.0 X86_64
- Mandriva Linux 2009.0
- OpenSSL OpenSSL 0.9.6 Beta2
- OpenSSL OpenSSL 0.9.6 Beta1
- OpenSSL OpenSSL 0.9.6
- OpenSSL OpenSSL 0.9.6 Beta3
- OpenSSL OpenSSL 0.9.6a
- OpenSSL OpenSSL 0.9.6a Beta2
- OpenSSL OpenSSL 0.9.6a Beta1
- OpenSSL OpenSSL 0.9.6a Beta3
- OpenSSL OpenSSL 0.9.6b
- OpenSSL OpenSSL 0.9.6c
- OpenSSL OpenSSL 0.9.6d
- OpenSSL OpenSSL 0.9.6e
- OpenSSL OpenSSL 0.9.6f
- OpenSSL OpenSSL 0.9.6g
- OpenSSL OpenSSL 0.9.6h
- OpenSSL OpenSSL 0.9.6i
- OpenSSL OpenSSL 0.9.6j
- OpenSSL OpenSSL 0.9.6k
- OpenSSL OpenSSL 0.9.6l
- OpenSSL OpenSSL 0.9.6m
- OpenSSL OpenSSL 0.9.7 Beta5
- OpenSSL OpenSSL 0.9.7 Beta4
- OpenSSL OpenSSL 0.9.7 Beta6
- OpenSSL OpenSSL 0.9.7 Beta1
- OpenSSL OpenSSL 0.9.7 Beta3
- OpenSSL OpenSSL 0.9.7 Beta2
- OpenSSL OpenSSL 0.9.7
- OpenSSL OpenSSL 0.9.7a
- OpenSSL OpenSSL 0.9.7b
- OpenSSL OpenSSL 0.9.7c
- OpenSSL OpenSSL 0.9.7d
- OpenSSL OpenSSL 0.9.7e
- OpenSSL OpenSSL 0.9.7f
- OpenSSL OpenSSL 0.9.7g
- OpenSSL OpenSSL 0.9.7h
- OpenSSL OpenSSL 0.9.7i
- OpenSSL OpenSSL 0.9.7j
- OpenSSL OpenSSL 0.9.7k
- OpenSSL OpenSSL 0.9.7l
- OpenSSL OpenSSL 0.9.8
- OpenSSL OpenSSL 0.9.8a
- OpenSSL OpenSSL 0.9.8b
- OpenSSL OpenSSL 0.9.8c
- OpenSSL OpenSSL 0.9.8d
- OpenSSL OpenSSL 0.9.8e
- OpenSSL OpenSSL 0.9.8f
- OpenSSL OpenSSL 0.9.8g
- OpenSSL OpenSSL 0.9.8h
- OpenSSL OpenSSL
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Enterprise Linux 5
- VMware ESX Server 4.0
- VMware vMA 4.0
Reported:
Apr 23, 2009
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