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CVE Record

CVE-2009-2410: The local_handler_callback function in server/responder/pam/pam_LOCAL_domain.c in sssd 0.4.1 does not prope...

The local_handler_callback function in server/responder/pam/pam_LOCAL_domain.c in sssd 0.4.1 does not properly handle blank-password accounts in the SSSD BE database, which allows context-dependent attackers to obtain access by sending the account's username, in conjunction with an arbitrary password, over an ssh connection.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2009-2410 is an old SSSD authentication flaw. On affected systems, a local SSSD account with a blank password could be accessed over SSH using the correct username and any supplied password. The sources do not provide CVSS scoring or evidence of active exploitation.

Executive priority

Treat as high priority only where legacy SSSD 0.4.1 and blank local SSSD passwords exist. For modern fleets, prioritize discovery and closure of any unsupported authentication infrastructure.

Technical view

SSSD 0.4.1 mishandles blank-password accounts in the SSSD backend database inside local_handler_callback in pam_LOCAL_domain.c. In the described condition, SSH/PAM authentication can accept an arbitrary password for a username whose SSSD local account has a blank password.

Likely exposure

Exposure appears limited to legacy systems running SSSD 0.4.1 with SSSD local-domain accounts, SSH/PAM integration, and blank-password entries in the SSSD backend database.

Exploitation context

The CVE describes context-dependent access over SSH, but the bundle does not cite public exploitation, KEV listing, exploit maturity, or broad scanning activity.

Researcher notes

The public bundle is sparse: no CVSS, CWE, CPE, or detailed fixed-version metadata is included. Analysis depends mainly on the CVE description and Red Hat/Fedora-linked references.

Mitigation direction

  • Identify and retire any SSSD 0.4.1 deployments.
  • Remove or disable blank-password SSSD local accounts.
  • Review Red Hat and Fedora guidance for fixed packages.
  • Update SSSD through vendor-supported channels where applicable.
  • Restrict SSH access to trusted networks during remediation.

Validation and detection

  • Inventory systems using SSSD local-domain authentication.
  • Check installed SSSD versions against vendor advisories.
  • Audit SSSD local accounts for blank passwords.
  • Review SSH/PAM configuration for SSSD dependency.
  • Confirm remediation through configuration and package state review.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2009-2410 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.