Multiple buffer overflow vulnerabilities were found in the QUIC image decoding process of the SPICE remote display system, before spice-0.14.2-1. Both the SPICE client (spice-gtk) and server are affected by these flaws. These flaws allow a malicious client or server to send specially crafted messages that, when processed by the QUIC image compression algorithm, result in a process crash or potential code execution.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-14355
• https://bugzilla.redhat.com/show_bug.cgi?id=1868435
• https://lists.debian.org/debian-lts-announce/2020/11/msg00001.html
• https://lists.debian.org/debian-lts-announce/2020/11/msg00002.html
• https://usn.ubuntu.com/4572-1/
• https://usn.ubuntu.com/4572-2/
• https://www.debian.org/security/2020/dsa-4771
• https://www.openwall.com/lists/oss-security/2020/10/06/10
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00001.html