A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.
Metrics
Affected Vendors & Products
References
History
Tue, 04 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 04 Aug 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | sssd: sssd: PAM responder out-of-bounds read via unchecked auth_token_length in protocol v1 | Sssd: sssd: pam responder out-of-bounds read via unchecked auth_token_length in protocol v1 |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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| References |
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Mon, 03 Aug 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sssd
Sssd sssd |
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| 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 extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service. | |
| Title | sssd: sssd: PAM responder out-of-bounds read via unchecked auth_token_length in protocol v1 | |
| Weaknesses | CWE-125 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-04T19:10:51.243Z
Reserved: 2026-07-31T12:44:34.409Z
Link: CVE-2026-68743
Updated: 2026-08-04T19:10:19.852Z
No data.
OpenCVE Enrichment
Updated: 2026-08-04T09:15:03Z