Improper input validation in Linux Kernel
CVE-2020-25643
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Linux Kernel — versions 5.9.0
- NetApp H410c
- NetApp H410c Firmware
- Starwindsoftware Starwind Virtual San — versions v8
- Debian Linux — versions 9.0, 10.0
- openSUSE Leap — versions 15.1, 15.2
- Red Hat Enterprise Linux — versions 7.0, 8.0
- Kernel — versions Linux kernel versions before 5.9-rc7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4774 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/10/msg00028.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/10/msg00032.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/10/msg00034.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20201103-0002/ (Third Party Advisory)
- www.starwindsoftware.com/security/sw-20210325-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25643?
- CVE-2020-25643 is a high-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 7.2/10. Published 2020-10-06.
- How severe is CVE-2020-25643?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2020-25643 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.