Resource exhaustion in Lldpd Project
CVE-2020-27827
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Lldpd Project
- Openvswitch
- Siemens Simatic Hmi Unified Comfort Panels
- Siemens Simatic Hmi Unified Comfort Panels Firmware
- Siemens Simatic Net Cp 1243-1
- Siemens Simatic Net Cp 1243-1 Firmware
- Siemens Simatic Net Cp 1243-8 Irc
- Siemens Simatic Net Cp 1243-8 Irc Firmware
- Siemens Simatic Net Cp 1542sp-1
- Siemens Simatic Net Cp 1542sp-1 Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Mitigation, Issue Tracking)
- mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html (Mailing List, Mitigation, Vendor Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf (Patch, Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-21-194-07 (US Government Resource, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202311-16 (vendor-advisory)
Frequently asked questions
- What is CVE-2020-27827?
- CVE-2020-27827 is a high-severity vulnerability in Lldpd Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-03-18.
- How severe is CVE-2020-27827?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-27827 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.