CVE-2019-3861

MEDIUMCVSS 5/10EPSS 5.12%

Last modified

CVE-2019-3861 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 in the way SSH packets with a padding length value greater than the packet length are parsed. 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 5.12% chance of exploitation in the next 30 days.

Description

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. 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
5.12%

91.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libssh2Libssh2>= 0.15, <= 1.8.0
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-2019-3861?
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. 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-2019-3861?
CVE-2019-3861 has a CVSS score of 5/10 (MEDIUM severity). The EPSS model estimates a 5.12% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3861?
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