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NVD / CVE Program· CNA mitre

CVE-2004-0832: The (1) ntlm_fetch_string and (2) ntlm_get_string functions in Squid 2.5.6 and earlier, with NTLM authentication enabled, allow remote…

MediumCVSS 5.0 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 23/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 10.3% (FIRST EPSS); higher than 95.7% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: squid (Debian:12) 2.5.6-8; squid (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.1; squid-debuginfo (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.1.

Low priority for now. Upgrade to squid (Debian:12) 2.5.6-8; squid (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.1; squid-debuginfo (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The (1) ntlm_fetch_string and (2) ntlm_get_string functions in Squid 2.5.6 and earlier, with NTLM authentication enabled, allow remote attackers to cause a denial of service (application crash) via an NTLMSSP packet that causes a negative value to be passed to memcpy.

Published
Nov 3, 2004
Updated
Jun 16, 2026
EPSS
10.3% · 95th percentile
CWE
—

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
3 / 30 · 10.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Follow CVE-2004-0832

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
squidsquid

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • squid squidup to 2.5.6 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12squidbefore 2.5.6-82.5.6-8
Red Hat:enterprise_linux:3::assquidbefore 7:2.5.STABLE3-6.3E.17:2.5.STABLE3-6.3E.1
Red Hat:enterprise_linux:3::assquid-debuginfobefore 7:2.5.STABLE3-6.3E.17:2.5.STABLE3-6.3E.1

Same product

squid: all records

Other highest-scoring records for the same primary product.

  • CVE-2009-0478Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request…
    42Plan
  • CVE-2005-0194Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth…
    42Plan
  • CVE-2005-0241The httpProcessReplyHeader function in http.c for Squid 2.5-STABLE7 and earlier does not properly set the debug context when it is handling…
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2002-2414Dec 31, 2002 · Opera 6.0.3, when using Squid 2.4 for HTTPS proxying, does not properly handle when accepting a non-global certificate authority (CA)…
    17Monitor
  • ← EarlierCVE-2004-0189Mar 15, 2004 · The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL…
    34Monitor
  • Later →CVE-2004-2654Dec 31, 2004 · The clientAbortBody function in client_side.c in Squid Web Proxy Cache before 2.6 STABLE6 allows remote attackers to cause a denial of…
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:squid2.5.6-8 · Debian:12Package registry (OSV)
red hat:squid7:2.5.STABLE3-6.3E.1 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:squid-debuginfo7:2.5.STABLE3-6.3E.1 · Red Hat:enterprise_linux:3::asPackage registry (OSV)

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

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.

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records