Buffer overflow in Oracle Http_server
CVE-2021-4034
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current ve…
Vulnerability class: Buffer Overflow
EPSS: 0.949 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Oracle Http_server — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Zfs_storage_appliance_kit — versions 8.8
- Polkit_project Polkit
- Siemens Scalance_lpe9403
- Siemens Scalance_lpe9403_firmware
- Siemens Sinumerik_edge
- Starwindsoftware Command_center — versions 1.0
- Starwindsoftware Starwind_virtual_san — versions v8
- Canonical Ubuntu_linux — versions 14.04, 16.04, 18.04
- Redhat Enterprise_linux — versions 8.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secalert@redhat.com (Mitigation, Vendor Advisory)
- secalert@redhat.com (Exploit, Third Party Advisory, Mitigation)
- secalert@redhat.com (Patch, Issue Tracking)
- secalert@redhat.com (Patch)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (Exploit, VDB Entry, Third Party Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-4034?
- CVE-2021-4034 is a high-severity vulnerability in Oracle Http_server, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-01-28.
- How severe is CVE-2021-4034?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-4034 known to be exploited?
- Yes. CVE-2021-4034 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-27), indicating it is being actively exploited. 585 public proof-of-concept repositories are indexed.