Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
Summary
Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields.
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
Remediation
Red Hat 1 advisory
- RHSA-2011:0496 Released 2011-05-09 · Red Hat rating Importantxen security update
- RHEL Virtualization (v. 5 server) xen-3.0.3-120.el5_6.2, xen-3.0.3-120.el5_6.2.i386, xen-3.0.3-120.el5_6.2.ia64 +3
- Red Hat Enterprise Linux (v. 5.6.z server) xen-3.0.3-120.el5_6.2, xen-libs-3.0.3-120.el5_6.2, xen-libs-3.0.3-120.el5_6.2.i386 +1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| RHEL Virtualization (v. 5 server) | Fixed | RHSA-2011:0496 |
| Red Hat Enterprise Linux (v. 5.6.z server) | Fixed | RHSA-2011:0496 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1583
- 2026-10-03 Alias added: GHSA-4qc2-w83m-rm23
References
More Citrix Xen vulnerabilities
- TI-2011-01674 Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d… CVSS 2.0HIGH 7.4
- TI-2008-04202 xend in Xen 3.0.3 does not properly limit the contents of the /local/domain xenstore… CVSS 2.0HIGH 7.2
- TI-2008-05424 xend in Xen 3.3.0 does not properly restrict a guest VM's write access within the… CVSS 2.0HIGH 7.2
- TI-2010-04004 The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit… CVSS 2.0MEDIUM 6.1
- TI-2010-03988 The vbd_create function in Xen 3.1.2, when the Linux kernel 2.6.18 on Red Hat Enterprise… CVSS 2.0MEDIUM 5.5
- TI-2010-03996 The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2)… CVSS 2.0MEDIUM 5.5
Sources
- CVE-2011-1583 · CVE Program
- CVE-2011-1583 · NVD
- FIRST EPSS
- GHSA-4qc2-w83m-rm23 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1583 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences