A certain debugging component in IBM AIX 5.3 and 6.1 does not properly handle the (1) _LIB_INIT_DBG and (2) _LIB_INIT_DBG_FILE environment variables, which allows local users to gain privileges by leveraging a setuid-root program to create an arbitrary root-owned file with world-writable permissions, related to libC.a (aka the XL C++ runtime library) in AIX 5.3 and libc.a in AIX 6.1
Published Aug 5, 2009
7.2
HIGHCVSS 2.0
EPSS 0.71%
Description
A certain debugging component in IBM AIX 5.3 and 6.1 does not properly handle the (1) _LIB_INIT_DBG and (2) _LIB_INIT_DBG_FILE environment variables, which allows local users to gain privileges by leveraging a setuid-root program to create an arbitrary root-owned file with world-writable permissions, related to libC.a (aka the XL C++ runtime library) in AIX 5.3 and libc.a in AIX 6.1.
Affected products
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:L/Au:N/C:C/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 2, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.71% (0.00715) | 52.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.71% (0.00715) | 48.72th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.12% (0.00119) | 28.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00043) | 11.55th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.04% (0.00043) | 9.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (12)
- http://aix.software.ibm.com/aix/efixes/security/libC_advisory.asc x_refsource_CONFIRMVendor Advisory
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=815 third-party-advisoryx_refsource_IDEFENSE
- http://secunia.com/advisories/36156 third-party-advisoryx_refsource_SECUNIA
- http://www.ibm.com/support/docview.wss?uid=isg1IZ54090 vendor-advisoryx_refsource_AIXAPAR
- http://www.ibm.com/support/docview.wss?uid=isg1IZ54091 vendor-advisoryx_refsource_AIXAPAR
- http://www.ibm.com/support/docview.wss?uid=isg1IZ54593 vendor-advisoryx_refsource_AIXAPAR
- http://www.ibm.com/support/docview.wss?uid=isg1IZ56203 vendor-advisoryx_refsource_AIXAPARPatchVendor Advisory
- http://www.ibm.com/support/docview.wss?uid=isg1IZ56204 vendor-advisoryx_refsource_AIXAPARPatchVendor Advisory
- http://www.ibm.com/support/docview.wss?uid=isg1IZ56205 vendor-advisoryx_refsource_AIXAPARPatchVendor Advisory
- http://www.ibm.com/support/docview.wss?uid=isg1IZ56206 vendor-advisoryx_refsource_AIXAPARPatchVendor Advisory
- http://www.securityfocus.com/bid/35934 vdb-entryx_refsource_BIDPatch
- http://www.vupen.com/english/advisories/2009/2151 vdb-entryx_refsource_VUPEN
Change history (0)
No recorded changes yet.