Description
A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
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References
History
Mon, 03 Aug 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sssd
Sssd sssd |
|
| Vendors & Products |
Sssd
Sssd sssd |
Mon, 03 Aug 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process. | |
| Title | sssd: sssd: NSS responder uninitialized heap disclosure in initgroups reply | |
| Weaknesses | CWE-908 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
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OpenCVE Enrichment
Updated: 2026-08-03T13:30:04Z
Weaknesses
-
CWE-908
Use of Uninitialized Resource