sudo: insecure temporary file use in RPM %postun script
Published Aug 8, 2012
5.6
MEDIUMCVSS 2.0
EPSS 0.43%
Description
A certain Red Hat script for sudo 1.7.2 on Red Hat Enterprise Linux (RHEL) 5 allows local users to overwrite arbitrary files via a symlink attack on the /var/tmp/nsswitch.conf.bak temporary file.
Affected products
No data.
- 1.7.2
- 5
No data.
Red Hat Enterprise Linux 5
sudo-0:1.7.2p1-14.el5_8.2
Fixed · RHSA-2012:1149
Red Hat Enterprise Linux 4
sudo
Not affected
Red Hat Enterprise Linux 6
sudo
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | sudo-0:1.7.2p1-14.el5_8.2 | Fixed | RHSA-2012:1149 |
| Red Hat Enterprise Linux 4 | sudo | Not affected | n/a |
| Red Hat Enterprise Linux 6 | sudo | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:N/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.43% (0.00435) | 35.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00435) | 34.48th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00034) | 6.50th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 13, 2023 | 0.89% (0.00890) | 29.93th | v2 (v2022.01.01) |
| Feb 3, 2023 | 0.95% (0.00950) | 31.66th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00890) | 28.64th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00890) | 26.62th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
References (6)
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/54868 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-3440 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=844442 x_refsource_CONFIRMExploitIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-3440
- https://www.cve.org/CVERecord?id=CVE-2012-3440
| Link | Providers | Tags |
|---|---|---|
| http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/54868 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2012-3440 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=844442 | x_refsource_CONFIRMExploitIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-3440 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-3440 |
Change history (0)
No recorded changes yet.