| Name | CVE-2020-27827 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-2571-1, DSA-4836-1 |
| NVD severity | high |
| Debian Bugs | 980132 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| lldpd (PTS) | stretch | 0.9.6-1 | vulnerable |
| buster | 1.0.3-1 | vulnerable | |
| bullseye | 1.0.11-1 | fixed | |
| bookworm, sid | 1.0.12-1 | fixed | |
| openvswitch (PTS) | stretch | 2.6.2~pre+git20161223-3 | vulnerable |
| stretch (security) | 2.6.10-0+deb9u1 | fixed | |
| buster | 2.10.0+2018.08.28+git.8ca7c82b7d+ds1-12+deb10u2 | vulnerable | |
| buster (security) | 2.10.7+ds1-0+deb10u1 | fixed | |
| bullseye | 2.15.0+ds1-2 | fixed | |
| bookworm, sid | 2.15.0+ds1-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| lldpd | source | (unstable) | 1.0.8-1 | |||
| openvswitch | source | stretch | 2.6.10-0+deb9u1 | DLA-2571-1 | ||
| openvswitch | source | buster | 2.10.6+ds1-0+deb10u1 | DSA-4836-1 | ||
| openvswitch | source | (unstable) | 2.15.0~git20210104.def6eb1ea+dfsg1-4 | 980132 |
[buster] - lldpd <no-dsa> (Minor issue)
[stretch] - lldpd <no-dsa> (Minor issue)
https://github.com/openvswitch/ovs/pull/337
https://github.com/lldpd/lldpd/commit/a8d3c90feca548fc0656d95b5d278713db86ff61
https://mail.openvswitch.org/pipermail/ovs-announce/2021-January/000269.html
https://github.com/openvswitch/ovs/commit/78e712c0b1dacc2f12d2a03d98f083d8672867f0