Multiple vendors 3rd party cryptographic library ASN.1 denial of service

multiple-crypto-asn1-dos (34430) The risk level is classified as LowLow Risk

Description:

Multiple vendors including Cisco devices running IOS and Novell are vulnerable to a denial of service attack caused by improper parsing of abstract Syntax Notation One (ASN.1) objects by a 3rd party cryptographic library. A remote attacker could exploit this vulnerability to cause the device to stop responding.

*CVSS:

Base Score: 5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

For Cisco:
Refer to cisco-sa-20070522-crypto for patch, upgrade, or suggested workaround information. See References.

For Novell:
Refer to Novell Security Alert 3590033 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • cisco-sa-20070522-crypto: Cisco Security Advisory: Vulnerability In Crypto Library.
  • Novell Security Alert 3590033: Security Vulnerability: RSA BSAFE Libraries denial of service.
  • BID-24104: RSA BSAFE Library Remote ASN.1 Denial of Service Vulnerability
  • CVE-2006-3894: The RSA Crypto-C before 6.3.1 and Cert-C before 2.8 libraries, as used by RSA BSAFE, multiple Cisco products, and other products, allows remote attackers to cause a denial of service via malformed ASN.1 objects.
  • SA25343: RSA BSAFE Unspecified Denial of Service Vulnerability
  • SA25364: Cisco Products Crypto Library Denial of Service
  • SA25399: Novell International Cryptographic Infrastructure Two Vulnerabilities
  • SECTRACK ID: 1018095: RSA BSAFE ASN.1 Parsing Bug Lets Remote Users Deny Service
  • US-CERT VU#754281: RSA BSAFE libraries denial of service vulnerability
  • VUPEN/ADV-2007-1908: RSA BSAFE Library ASN.1 Objects Processing Remote Denial of Service Vulnerability
  • VUPEN/ADV-2007-1909: Cisco Products Crypto Library ASN.1 Objects Processing Denial of Service Vulnerability
  • VUPEN/ADV-2007-1945: Novell International Crypotographic Infrastructure Security Bypass and DoS Issues

Platforms Affected:

  • Cisco IOS 12.21XA
  • Cisco IOS 12.21XB
  • Cisco IOS 12.2B
  • Cisco IOS 12.2BC
  • Cisco IOS 12.2BZ
  • Cisco IOS 12.2CX
  • Cisco IOS 12.2CZ
  • Cisco IOS 12.2EW
  • Cisco IOS 12.2EWA
  • Cisco IOS 12.2EX
  • Cisco IOS 12.2EY
  • Cisco IOS 12.2EZ
  • Cisco IOS 12.2FX
  • Cisco IOS 12.2FZ
  • Cisco IOS 12.2IXC
  • Cisco IOS 12.2JA
  • Cisco IOS 12.2JK
  • Cisco IOS 12.2SB
  • Cisco IOS 12.2SE
  • Cisco IOS 12.2SEA
  • Cisco IOS 12.2SEB
  • Cisco IOS 12.2SEC
  • Cisco IOS 12.2SED
  • Cisco IOS 12.2SEE
  • Cisco IOS 12.2SEF
  • Cisco IOS 12.2SEG
  • Cisco IOS 12.2SG
  • Cisco IOS 12.2SGA
  • Cisco IOS 12.2SRA
  • Cisco IOS 12.2SRB
  • Cisco IOS 12.2SXD
  • Cisco IOS 12.2SXE
  • Cisco IOS 12.2SXF
  • Cisco IOS 12.2T
  • Cisco IOS 12.2XR
  • Cisco IOS 12.2YU
  • Cisco IOS 12.2YV
  • Cisco IOS 12.2ZD
  • Cisco IOS 12.2ZE
  • Cisco IOS 12.2ZF
  • Cisco IOS 12.2ZG
  • Cisco IOS 12.2ZH
  • Cisco IOS 12.2ZJ
  • Cisco IOS 12.2ZL
  • Cisco IOS 12.2ZU
  • Cisco IOS 12.2ZW
  • Cisco IOS 12.3
  • Cisco IOS 12.3B
  • Cisco IOS 12.3BC
  • Cisco IOS 12.3JA
  • Cisco IOS 12.3JEA
  • Cisco IOS 12.3JK
  • Cisco IOS 12.3JL
  • Cisco IOS 12.3JX
  • Cisco IOS 12.3T
  • Cisco IOS 12.3TPC
  • Cisco IOS 12.3XA
  • Cisco IOS 12.3XB
  • Cisco IOS 12.3XC
  • Cisco IOS 12.3XD
  • Cisco IOS 12.3XE
  • Cisco IOS 12.3XF
  • Cisco IOS 12.3XG
  • Cisco IOS 12.3XH
  • Cisco IOS 12.3XI
  • Cisco IOS 12.3XJ
  • Cisco IOS 12.3XK
  • Cisco IOS 12.3XQ
  • Cisco IOS 12.3XR
  • Cisco IOS 12.3XS
  • Cisco IOS 12.3XU
  • Cisco IOS 12.3XW
  • Cisco IOS 12.3XX
  • Cisco IOS 12.3YA
  • Cisco IOS 12.3YD
  • Cisco IOS 12.3YF
  • Cisco IOS 12.3YG
  • Cisco IOS 12.3YH
  • Cisco IOS 12.3YI
  • Cisco IOS 12.3YK
  • Cisco IOS 12.3YQ
  • Cisco IOS 12.3YS
  • Cisco IOS 12.3YT
  • Cisco IOS 12.3YU
  • Cisco IOS 12.3YX
  • Cisco IOS 12.3YZ
  • Cisco IOS 12.4
  • Cisco IOS 12.4SW
  • Cisco IOS 12.4T
  • Cisco IOS 12.4XA
  • Cisco IOS 12.4XB
  • Cisco IOS 12.4XC
  • Cisco IOS 12.4XD
  • Cisco IOS 12.4XE
  • Cisco IOS 12.4XJ
  • Cisco IOS 12.4XP
  • Cisco IOS XR 3.2.3
  • Cisco IOS XR 3.2.4
  • Cisco IOS XR 3.2.6
  • Cisco IOS XR 3.3
  • Cisco IOS XR 3.3.1
  • Cisco IOS XR 3.3.2
  • Cisco IOS XR 3.3.3
  • Cisco IOS XR 3.4
  • Cisco IOS XR 3.4.1
  • Cisco PIX ASA IDS 7.0
  • Cisco PIX ASA IDS 7.1
  • Cisco PIX ASA IDS 7.2
  • Cisco Unified CallManager 4.0
  • Cisco Unified CallManager 4.1
  • Cisco Unified CallManager 4.2
  • Cisco Unified CallManager 4.3
  • Cisco Unified CallManager 5.0
  • Cisco Unified CallManager 5.1
  • RSA BSAFE CERT-C 2.7
  • RSA BSAFE CRYPTO-C 6.3

Reported:

May 22, 2007

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