CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow
A heap overwrite vulnerability in OpenSLP allows remote attackers to execute arbitrary code on VMware ESXi and Horizon DaaS appliances.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-5544?
CVE-2019-5544 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 6 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.
Weakness: CWE-787
Which versions are affected by CVE-2019-5544?
It affects 16 products.
Linux distribution packages (32)
openslp Red Hat:enterprise_linux:6::client | All versions | 1:2.0.0-4.el6_10 |
openslp-debuginfo Red Hat:enterprise_linux:6::client | All versions | 1:2.0.0-4.el6_10 |
openslp-devel Red Hat:enterprise_linux:6::client | All versions | 1:2.0.0-4.el6_10 |
openslp-server Red Hat:enterprise_linux:6::client | All versions | 1:2.0.0-4.el6_10 |
openslp Red Hat:enterprise_linux:6::computenode | All versions | 1:2.0.0-4.el6_10 |
openslp-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 1:2.0.0-4.el6_10 |
openslp-devel Red Hat:enterprise_linux:6::computenode | All versions | 1:2.0.0-4.el6_10 |
openslp-server Red Hat:enterprise_linux:6::computenode | All versions | 1:2.0.0-4.el6_10 |
openslp Red Hat:enterprise_linux:6::server | All versions | 1:2.0.0-4.el6_10 |
openslp-debuginfo Red Hat:enterprise_linux:6::server | All versions | 1:2.0.0-4.el6_10 |
openslp-devel Red Hat:enterprise_linux:6::server | All versions | 1:2.0.0-4.el6_10 |
openslp-server Red Hat:enterprise_linux:6::server | All versions | 1:2.0.0-4.el6_10 |
openslp Red Hat:enterprise_linux:6::workstation | All versions | 1:2.0.0-4.el6_10 |
openslp-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 1:2.0.0-4.el6_10 |
openslp-devel Red Hat:enterprise_linux:6::workstation | All versions | 1:2.0.0-4.el6_10 |
openslp-server Red Hat:enterprise_linux:6::workstation | All versions | 1:2.0.0-4.el6_10 |
openslp Red Hat:enterprise_linux:7::client | All versions | 1:2.0.0-8.el7_7 |
openslp-debuginfo Red Hat:enterprise_linux:7::client | All versions | 1:2.0.0-8.el7_7 |
openslp-devel Red Hat:enterprise_linux:7::client | All versions | 1:2.0.0-8.el7_7 |
openslp-server Red Hat:enterprise_linux:7::client | All versions | 1:2.0.0-8.el7_7 |
openslp Red Hat:enterprise_linux:7::computenode | All versions | 1:2.0.0-8.el7_7 |
openslp-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 1:2.0.0-8.el7_7 |
openslp-devel Red Hat:enterprise_linux:7::computenode | All versions | 1:2.0.0-8.el7_7 |
openslp-server Red Hat:enterprise_linux:7::computenode | All versions | 1:2.0.0-8.el7_7 |
openslp Red Hat:enterprise_linux:7::server | All versions | 1:2.0.0-8.el7_7 |
openslp-debuginfo Red Hat:enterprise_linux:7::server | All versions | 1:2.0.0-8.el7_7 |
openslp-devel Red Hat:enterprise_linux:7::server | All versions | 1:2.0.0-8.el7_7 |
openslp-server Red Hat:enterprise_linux:7::server | All versions | 1:2.0.0-8.el7_7 |
openslp Red Hat:enterprise_linux:7::workstation | All versions | 1:2.0.0-8.el7_7 |
openslp-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 1:2.0.0-8.el7_7 |
openslp-devel Red Hat:enterprise_linux:7::workstation | All versions | 1:2.0.0-8.el7_7 |
openslp-server Red Hat:enterprise_linux:7::workstation | All versions | 1:2.0.0-8.el7_7 |
Products include Fedoraproject Fedora, Openslp Openslp, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Ibm Z Systems Eus, Redhat Enterprise Linux for Power Big Endian and 10 more.
How do I fix CVE-2019-5544?
Apply the vendor's patch. US federal agencies must fix it by 3 May 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-5544 being exploited?
Yes. Attackers have exploited CVE-2019-5544 in the wild since at least 3 Nov 2021, including in ransomware campaigns.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as AZL-36968, AZL-7321, GHSA-4734-5452-r5fh, MGASA-2020-0075, RHSA-2019:4240, RHSA-2020:0199 and 2 more.