Multiple vulnerabilities in SYMDNS.SYS for Symantec Norton Internet Security and Professional 2002 through 2004, Norton Personal Firewall 20
Multiple vulnerabilities in SYMDNS.SYS for Symantec Norton Internet Security and Professional 2002 through 2004, Norton Personal Firewall 2002 through 2004, Norton AntiSpam 2004, Client Firewall 5.01 and 5.1.1, and Client Security 1.0 through 2.0 allow remote attackers to cause a denial of service or execute arbitrary code via (1) a manipulated length byte in the first-level decoding routine for NetBIOS Name Service (NBNS) that modifies an index variable and leads to a stack-based buffer overflow, (2) a heap-based corruption problem in an NBNS response that is missing certain RR fields, and (3) a stack-based buffer overflow in the DNS component via a Resource Record (RR) with a long canonical name (CNAME) field composed of many smaller components.
- Published
- Jul 7, 2004
- Updated
- Jun 16, 2026
- EPSS
- 12.8% · 96th percentile
- CWE
- —
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Report tools
Action score
44
Plan
Add it to your regular patch cycle.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 4 / 30 · 12.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| symantec | client firewall | cpe:2.3:a:symantec:client_firewall |
| symantec | client security | cpe:2.3:a:symantec:client_security |
| symantec | norton antispam | cpe:2.3:a:symantec:norton_antispam |
| symantec | norton internet security | cpe:2.3:a:symantec:norton_internet_security |
| symantec | norton personal firewall | cpe:2.3:a:symantec:norton_personal_firewall |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- symantec client firewall5.01
- symantec client firewall5.1.1
- symantec client security1.0
- symantec client security1.1
- symantec client security1.2
- symantec client security1.3
- symantec client security1.4
- symantec client security1.5
- symantec client security1.6
- symantec client security1.7
- symantec client security1.8
- symantec client security1.9
- symantec client security2.0
- symantec norton antispam2004
- symantec norton internet security2002
- symantec norton internet security2003
- symantec norton internet security2004
- symantec norton personal firewall2002
- symantec norton personal firewall2003
- symantec norton personal firewall2004
Same product
symantec: all recordsOther highest-scoring records for the same primary product.
- CVE-2004-0375SYMNDIS.SYS in Symantec Norton Internet Security 2003 and 2004, Norton Personal Firewall 2003 and 2004, Client Firewall 5.01 and 5.1.1, and 23Monitor
- CVE-2004-0445The SYMDNS.SYS driver in Symantec Norton Internet Security and Professional 2002 through 2004, Norton Personal Firewall 2002 through 2004, N13Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- lists.grok.org.uk/pipermail/full-disclosure/2004-May/021360.html
- lists.grok.org.uk/pipermail/full-disclosure/2004-May/021361.html
- lists.grok.org.uk/pipermail/full-disclosure/2004-May/021362.html
- secunia.com/advisories/11066
- securityresponse.symantec.com/avcenter/security/Content/2004.05.12.html
- securitytracker.com/id?1010144
- securitytracker.com/id?1010145
- securitytracker.com/id?1010146
- www.ciac.org/ciac/bulletins/o-141.shtml
- www.kb.cert.org/vuls/id/294998
- www.kb.cert.org/vuls/id/634414
- www.kb.cert.org/vuls/id/637318
- www.osvdb.org/6099
- www.osvdb.org/6101
- www.osvdb.org/6102
- www.securityfocus.com/bid/10333
- www.securityfocus.com/bid/10334
- www.securityfocus.com/bid/10335
- exchange.xforce.ibmcloud.com/vulnerabilities/16134
- exchange.xforce.ibmcloud.com/vulnerabilities/16135
Vendor advisories and official records. Exploit/PoC links are deliberately left out.