CVE-2012-5644
Description
From CVE.org
libuser has information disclosure when moving user's home directory
Statement
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Mitigation
There are several restrictions to successful exploitation of this flaw:
1. ONLY applications compiled with libuser are affected. The affected code is hit only when a move operation is conducted on user home directory.
2. The attacker needs to have a shell account on the target machine.
3. Since this is a TOCTOU attack, precise timing is required for the attack. The attacker needs to know exactly when the move directory is moved in order successfully exploit this flaw.
Any other application acting on user directories (not compiled with libuser) for example usermod/userdel are not affected by this flaw.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.7 | 4.9 | N/A |
| Attack Vector | Local | Local | N/A |
| Access Complexity | Medium | Low | N/A |
| Authentication | None | None | N/A |
| Confidentiality Impact | Complete | Complete | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: AV:L/AC:M/Au:N/C:C/I:N/A:N
NVD: AV:L/AC:L/Au:N/C:C/I:N/A:N
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