Current Description

SYMNDIS.SYS in Symantec Norton Internet Security 2003 and 2004, Norton Personal Firewall 2003 and 2004, Client Firewall 5.01 and 5.1.1, and Client Security 1.0 and 1.1 allow remote attackers to cause a denial of service (infinite loop) via a TCP packet with (1) SACK option or (2) Alternate Checksum Data option followed by a length of zero.

Basic Data

PublishedAugust 18, 2004
Last ModifiedJuly 11, 2017
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeNVD-CWE-Other
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS 2 - Access VectorNETWORK
CVSS 2 - Access ComplexityLOW
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactNONE
CVSS 2 - Availability ImpactPARTIAL
CVSS 2 - Base Score5.0
Exploitability Score10.0
Impact Score2.9
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

No data provided.


  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3ApplicationSymantecClient Firewall5.01*******
    2.3ApplicationSymantecClient Firewall5.1.1*******
    2.3ApplicationSymantecClient Security1.0*******
    2.3ApplicationSymantecClient Security1.1*******
    2.3ApplicationSymantecNorton Internet Security2003*******
    2.3ApplicationSymantecNorton Internet Security2003*pro*****
    2.3ApplicationSymantecNorton Internet Security2004*******
    2.3ApplicationSymantecNorton Internet Security2004*pro*****
    2.3ApplicationSymantecNorton Personal Firewall2003*******
    2.3ApplicationSymantecNorton Personal Firewall2004*******

Vulnerable Software List

Symantec Client Firewall 5.01, 5.1.1
Symantec Norton Internet Security 2003, 2004
Symantec Client Security 1.0, 1.1
Symantec Norton Personal Firewall 2003, 2004


20040423 EEYE: Symantec Multiple Firewall TCP Options Denial of Service
9912 Vendor Advisory