Buffer overflow in Openslp
CVE-2019-5544
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.981 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.973 · newest: 0.981 · change: +0.009
Affected products
- Openslp
- VMware Esxi — versions 6.0, 6.5, 6.7
- VMware Horizon Daas
- Fedoraproject Fedora — versions 30, 31
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux For IBM Z Systems — versions 6.0_s390x, 7.0_s390x
- Red Hat Enterprise Linux For IBM Z Systems Eus — versions 7.7_s390x
- Red Hat Enterprise Linux For Power Big Endian — versions 6.0_ppc64, 7.0_ppc64
- Red Hat Enterprise Linux For Power Big Endian Eus — versions 7.7_ppc64
- Red Hat Enterprise Linux For Power Little Endian — versions 7.0_ppc64le
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.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- www.vmware.com/security/advisories/VMSA-2019-0022.html (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2019/12/10/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/12/11/2 (mailing-list, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:4240 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
- access.redhat.com/errata/RHSA-2020:0199 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202005-12 (vendor-advisory, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2019-5544?
- CVE-2019-5544 is a critical-severity vulnerability in Openslp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-12-06.
- How severe is CVE-2019-5544?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-5544 known to be exploited?
- Yes. CVE-2019-5544 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 14 public proof-of-concept repositories are indexed.