| Name | CVE-2021-20201 |
| Description | A flaw was found in spice in versions before 0.14.92. A DoS tool might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection. |
| 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) |
| NVD severity | medium |
| Debian Bugs | 983698 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| spice (PTS) | stretch | 0.12.8-2.1+deb9u3 | vulnerable |
| stretch (security) | 0.12.8-2.1+deb9u4 | vulnerable | |
| buster, buster (security) | 0.14.0-1.3+deb10u1 | vulnerable | |
| bullseye | 0.14.3-2.1 | fixed | |
| bookworm, sid | 0.15.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| spice | source | (unstable) | 0.14.3-2.1 | 983698 |
[buster] - spice <no-dsa> (Minor issue)
[stretch] - spice <no-dsa> (Minor issue)
https://gitlab.freedesktop.org/spice/spice/-/issues/49
https://gitlab.freedesktop.org/spice/spice/-/commit/ca5bbc5692e052159bce1a75f55dc60b36078749
https://gitlab.freedesktop.org/spice/spice/-/commit/95a0cfac8a1c8eff50f05e65df945da3bb501fc9
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks