The ExecShield feature in a certain Red Hat patch for the Linux kernel in Red Hat…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The ExecShield feature in a certain Red Hat patch for the Linux kernel in Red Hat Enterprise Linux (RHEL) 5 and 6 and Fedora 15 and 16 does not properly handle use of many shared libraries by a 32-bit executable file, which makes it easier for context-dependent attackers to bypass the ASLR protection mechanism by leveraging a predictable base address for one of these libraries.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:* | 15 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:* | 16 | Vulnerable | Fedoraproject |
| cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:* | 5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
- cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:* Versions 15 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:* Versions 16 Vulnerable ·Fedoraproject
- cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:* Versions 5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2013:0168 Released 2013-01-22 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-348.1.1.el5, kernel-2.6.18-348.1.1.el5.ia64, kernel-PAE-2.6.18-348.1.1.el5 +18
- RHSA-2012:1426 Released 2012-11-06 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-279.14.1.el6, kernel-debug-2.6.32-279.14.1.el6, kernel-debug-devel-2.6.32-279.14.1.el6 +5
- Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-279.14.1.el6, python-perf-2.6.32-279.14.1.el6
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-279.14.1.el6, kernel-debug-2.6.32-279.14.1.el6, kernel-debug-devel-2.6.32-279.14.1.el6 +5
- Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-279.14.1.el6, python-perf-2.6.32-279.14.1.el6
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-279.14.1.el6, kernel-bootwrapper-2.6.32-279.14.1.el6, kernel-debug-2.6.32-279.14.1.el6 +8
- Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-279.14.1.el6, python-perf-2.6.32-279.14.1.el6
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-279.14.1.el6, kernel-debug-2.6.32-279.14.1.el6, kernel-debug-devel-2.6.32-279.14.1.el6 +5
- Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-279.14.1.el6, python-perf-2.6.32-279.14.1.el6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2013:0168 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2012:1426 |
Not affected: 1 product
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2012-1568
- 2026-10-03 Alias added: GHSA-vp43-m2w7-p2vc
References
Other 5
- http://scarybeastsecurity.blogspot.com/2012/03/some-random-observations-on-linux-aslr.html
- https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=302a4fc15aebf202b6dffd6c804377c6058ee6e4
- [oss-security] 20120320 Re: CVE request -- kernel: execshield: predictable ascii armour base address
- [oss-security] 20120321 Re: CVE request -- kernel: execshield: predictable ascii armour base address
- https://bugzilla.redhat.com/show_bug.cgi?id=804947
Sources
- CVE-2012-1568 · CVE Program
- CVE-2012-1568 · NVD
- FIRST EPSS
- GHSA-vp43-m2w7-p2vc · GitHub Advisory Database · CC BY 4.0
- CVE-2012-1568 · Red Hat security data · CC BY 4.0
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