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CVE-2010-3872· NVD / CVE Program· CNA redhat

Httpd: mod_fcgid: stack-based buffer overflow in fcgid_header_bucket_read() in modules/fcgid/fcgid_bucket.c

A flaw was found in the mod_fcgid module of httpd. A malformed FastCGI response may result in a stack-based buffer overflow in the modules/fcgid/fcgid_bucket.c file in the fcgid_header_bucket_read() function, resulting in an application crash.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Nov 22, 2010
Updated
Jun 16, 2026
EPSS
2.8% · 86th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.8%

CNA vs NVD score

NVD
—
CNA · redhat
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
apachemod fcgid

Affected versions

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

  • apache mod fcgidup to 2.3.5 inclusive
  • apache mod fcgid2.3.1
  • apache mod fcgid2.3.2
  • apache mod fcgid2.3.3
  • apache mod fcgid2.3.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Fedora Fedora

    • all versionsunknown

  • n/a mod_fcgid

    • 2.3.6not affected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsunknown

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12libapache2-mod-fcgidbefore 1:2.3.6-11:2.3.6-1
Debian:5.0libapache2-mod-fcgidbefore 1:2.2-1+lenny11:2.2-1+lenny1
openSUSE:Tumbleweedapache2-mod_fcgidbefore 2.3.9-7.32.3.9-7.3

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-1000104A security Bypass vulnerability exists in the FcgidPassHeader Proxy in mod_fcgid through 2016-07-07.
    36Monitor
  • CVE-2013-4365Heap-based buffer overflow in the fcgid_header_bucket_read function in fcgid_bucket.c in the mod_fcgid module before 2.3.9 for the Apache HT
    34Monitor

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:libapache2-mod-fcgid1:2.3.6-1 · Debian:12Package registry (OSV)
opensuse:apache2-mod_fcgid2.3.9-7.3 · openSUSE:TumbleweedPackage 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.

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

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 help

Change log

  1. Fix✗ → ✓

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

References

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

All records