CVE-2019-3858

MEDIUMCVSS 5/10EPSS 6.45%

Last modified

CVE-2019-3858 is a medium-severity vulnerability rated 5/10 on the CVSS scale. An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.. EPSS estimates a 6.45% chance of exploitation in the next 30 days.

Description

An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.

Metrics

CVSS 3.0
5/10

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS Probability
6.45%

92.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libssh2Libssh2< 1.8.1
FedoraprojectFedora29
DebianDebian Linux8.0
NetappOntap Select Deploy Administration UtilityAll versions
OpensuseLeap15.0
OpensuseLeap42.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-3858?
An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
How severe is CVE-2019-3858?
CVE-2019-3858 has a CVSS score of 5/10 (MEDIUM severity). The EPSS model estimates a 6.45% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3858?
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.

How Strix Helps

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Source: NVD / NIST