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CVE-2020-25643

HIGHCVSS 7.2/10EPSS 3.25%

Last modified

CVE-2020-25643 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 3.25% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
3.25%

86.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel>= 2.6.29, < 4.4.238—
LinuxLinux Kernel>= 4.5, < 4.9.238—
LinuxLinux Kernel>= 4.10, < 4.14.200—
LinuxLinux Kernel>= 4.15, < 4.19.148—
LinuxLinux Kernel>= 4.20, < 5.4.68—
LinuxLinux Kernel>= 5.5, < 5.8.12—
LinuxLinux Kernel5.9.0Rc1
RedhatEnterprise Linux7.0—
RedhatEnterprise Linux8.0—
OpensuseLeap15.1—
DebianDebian Linux9.0—
DebianDebian Linux10.0—
OpensuseLeap15.2—
NetappH410c FirmwareAll versions—
StarwindsoftwareStarwind Virtual Sanv8Build12533

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2020-25643?
CVE-2020-25643 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 3.25% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25643?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25643?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST