Vulnerability Intelligence Report
Red Hat Libuser Race Condition Vulnerability
CVE-2015-3246
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file state) by causing an error during the modification. NOTE: this issue can be combined with CVE-2015-3245 to gain privileges.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
7.4
HIGH
Exploitability:1.5
Impact Score:5.9
EPSS Probability:8.80%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-367 ↗CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| n/a | n/a | n/a (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Red Hat, Inc. · Vendor · USA |
| Reserved | 2015-04-10T00:00:00 |
| Published | 2015-08-11T14:00:00 |
| Patch Date | 2015-07-23 |
| Last Updated | 2026-10-01T18:02:50 |
Community Chatter & Buzz