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CVE-2004-0918· NVD / CVE Program· CNA mitre

The asn_parse_header function (asn1.c) in the SNMP module for Squid Web Proxy Cache before 2.4.STABLE7 allows remote attackers to cause a de

Noroxi assessment

Priority: Monitor (action score 25/100)

  • 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: 15.8% (FIRST EPSS); higher than 96.8% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: squid (Debian:12) 2.5.7; squid (Debian:3.0) 2.4.6-2woody4; squid (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.2.

Low priority for now. Upgrade to squid (Debian:12) 2.5.7; squid (Debian:3.0) 2.4.6-2woody4; squid (Red Hat:enterprise_linux:3::as) 7:2.5.STABLE3-6.3E.2 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 asn_parse_header function (asn1.c) in the SNMP module for Squid Web Proxy Cache before 2.4.STABLE7 allows remote attackers to cause a denial of service (server restart) via certain SNMP packets with negative length fields that trigger a memory allocation error.

MediumCVSS 5.0 · v2.0—No exploit Fix available
Published
Jan 27, 2005
Updated
Jun 16, 2026
EPSS
15.8% · 96th percentile

Report tools

JSON

Action score

25

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
5 / 30 · 15.8%

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

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • 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
openpkgopenpkg
gentoolinux
redhatfedora core
trustixsecure linux
ubuntuubuntu linux

Affected versions

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

  • gentoo linuxall versions
  • openpkg openpkg2.1
  • openpkg openpkg2.2
  • openpkg openpkgcurrent
  • redhat fedora corecore_2.0
  • squid squid2.0_patch2
  • squid squid2.1_patch2
  • squid squid2.3_.stable4
  • squid squid2.3_.stable5
  • squid squid2.4
  • squid squid2.4_.stable2
  • squid squid2.4_.stable6
  • squid squid2.4_.stable7
  • squid squid2.5_.stable1
  • squid squid2.5_.stable3
  • squid squid2.5_.stable4
  • squid squid2.5_.stable5
  • squid squid2.5_.stable6
  • squid squid3.0_pre1
  • squid squid3.0_pre2

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12squidbefore 2.5.72.5.7
Debian:3.0squidbefore 2.4.6-2woody42.4.6-2woody4
Red Hat:enterprise_linux:3::assquidbefore 7:2.5.STABLE3-6.3E.27:2.5.STABLE3-6.3E.2
Red Hat:enterprise_linux:3::assquid-debuginfobefore 7:2.5.STABLE3-6.3E.27:2.5.STABLE3-6.3E.2

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 w
    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
  • CVE-2005-0095The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WC
    41Plan
  • CVE-2005-0173squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a userna
    40Plan
  • CVE-2005-0174Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache or conduct certain attacks via headers that do not follow the HTTP s
    35Monitor

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:squid2.5.7 · Debian:12Package registry (OSV)
red hat:squid7:2.5.STABLE3-6.3E.2 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:squid-debuginfo7:2.5.STABLE3-6.3E.2 · 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.

EPSS, last 120 days

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 researchers

Finders, 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
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)

CWE-399 · Resource Management Errors

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (16 more)

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

All records