VulnerabilityAnalyzed
CVE-2019-5544
VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
KEVCRITICAL 9.8EPSS 97.3%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 97.26% probability · 100th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022 · used in ransomware campaigns
- Weakness
- CWE-787
- Affected
- vmware/horizon daas · vmware/esxi · 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 · redhat/enterprise linux for power big endian eus · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation · openslp/openslp · fedoraproject/fedora
- Source
- security@vmware.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-5544
References
- http://www.openwall.com/lists/oss-security/2019/12/10/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/11/2Mailing List, Third Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2019-0022.htmlPatch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:4240Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0199Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/Release Notes
- https://security.gentoo.org/glsa/202005-12Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/10/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/11/2Mailing List, Third Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2019-0022.htmlPatch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:4240Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0199Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/Release Notes
- https://security.gentoo.org/glsa/202005-12Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5544US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.