CVE-2018-20023
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.50% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-665
- Affected
- libvnc project/libvncserver · debian/debian linux · canonical/ubuntu linux
- Source
- vulnerability@kaspersky.com
References
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201908-05
- https://usn.ubuntu.com/3877-1/Third Party Advisory
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://www.debian.org/security/2019/dsa-4383Third Party Advisory
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201908-05
- https://usn.ubuntu.com/3877-1/Third Party Advisory
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://www.debian.org/security/2019/dsa-4383Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.