OpenSSL ASN.1 sequence denial of service

openssl-asn1-sequence-dos (13595) The risk level is classified as MediumMedium Risk

Description:

OpenSSL, when running on Microsoft Windows, is vulnerable to a denial of service, caused by improper handling of large recursions. By sending a specially-crafted SSL/TLS client certificate containing arbitrary ASN.1 sequences, a remote attacker could cause OpenSSL to crash.


Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of OpenSSL (0.9.6l or later or 0.9.7c or later), as listed in OpenSSL Security Advisory [4 November 2003]. See References.

For EnGarde Secure Linux Community Edition and Professional Edition:
Upgrade to the latest openssl package (0.9.6-1.0.22 or later), as listed in Guardian Digital Security Advisory ESA-20031104-029. See References.

For SGI IRIX:
Upgrade to the appropriate fixed packages, as listed in SGI Security Advisory 20030904-02-P. See References.

— OR —

Apply the appropriate patch for your system, as listed in SGI Security Advisory 20031102-02-P. See References.

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

References:

Platforms Affected:

  • EngardeLinux Secure Community 1.0.1
  • EngardeLinux Secure Community 2.0
  • EngardeLinux Secure Professional 1.1
  • EngardeLinux Secure Professional 1.2
  • EngardeLinux Secure Professional 1.5
  • OpenSSL OpenSSL 0.9.6
  • OpenSSL OpenSSL 0.9.6a
  • 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 0.9.7
  • OpenSSL OpenSSL 0.9.7 Beta6
  • OpenSSL OpenSSL 0.9.7 Beta4
  • OpenSSL OpenSSL 0.9.7 Beta3
  • OpenSSL OpenSSL 0.9.7 Beta1
  • OpenSSL OpenSSL 0.9.7 Beta2
  • OpenSSL OpenSSL 0.9.7 Beta5
  • OpenSSL OpenSSL 0.9.7a
  • OpenSSL OpenSSL 0.9.7b
  • OpenSSL OpenSSL 0.9.7c
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Linux Advanced Workstation 2.1 Itanium
  • SGI IRIX 6.5
  • SGI IRIX 6.5 20
  • SGI IRIX 6.5.1
  • SGI IRIX 6.5.10
  • SGI IRIX 6.5.10f
  • SGI IRIX 6.5.10m
  • SGI IRIX 6.5.11
  • SGI IRIX 6.5.11f
  • SGI IRIX 6.5.11m
  • SGI IRIX 6.5.12
  • SGI IRIX 6.5.12f
  • SGI IRIX 6.5.12m
  • SGI IRIX 6.5.13
  • SGI IRIX 6.5.13f
  • SGI IRIX 6.5.13m
  • SGI IRIX 6.5.14
  • SGI IRIX 6.5.14f
  • SGI IRIX 6.5.14m
  • SGI IRIX 6.5.15
  • SGI IRIX 6.5.15f
  • SGI IRIX 6.5.15m
  • SGI IRIX 6.5.16
  • SGI IRIX 6.5.16f
  • SGI IRIX 6.5.16m
  • SGI IRIX 6.5.17
  • SGI IRIX 6.5.17f
  • SGI IRIX 6.5.17m
  • SGI IRIX 6.5.18
  • SGI IRIX 6.5.18f
  • SGI IRIX 6.5.18m
  • SGI IRIX 6.5.19
  • SGI IRIX 6.5.19f
  • SGI IRIX 6.5.19m
  • SGI IRIX 6.5.2
  • SGI IRIX 6.5.20
  • SGI IRIX 6.5.20f
  • SGI IRIX 6.5.20m
  • SGI IRIX 6.5.21
  • SGI IRIX 6.5.21f
  • SGI IRIX 6.5.21m
  • SGI IRIX 6.5.22
  • SGI IRIX 6.5.2f
  • SGI IRIX 6.5.2m
  • SGI IRIX 6.5.3
  • SGI IRIX 6.5.3f
  • SGI IRIX 6.5.3m
  • SGI IRIX 6.5.4
  • SGI IRIX 6.5.4f
  • SGI IRIX 6.5.4m
  • SGI IRIX 6.5.5
  • SGI IRIX 6.5.5f
  • SGI IRIX 6.5.5m
  • SGI IRIX 6.5.6
  • SGI IRIX 6.5.6f
  • SGI IRIX 6.5.6m
  • SGI IRIX 6.5.7
  • SGI IRIX 6.5.7f
  • SGI IRIX 6.5.7m
  • SGI IRIX 6.5.8
  • SGI IRIX 6.5.8f
  • SGI IRIX 6.5.8m
  • SGI IRIX 6.5.9
  • SGI IRIX 6.5.9f
  • SGI IRIX 6.5.9m

Reported:

Nov 04, 2003

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