CVE-2019-3855
HIGH severity · CVSS 8.8 · Integer overflow
8.8CVSS HIGH
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)9%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.openwall.com/lists/oss-security/2019/03/18/3 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2019/03/18/3Patch
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlAdvisory
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlAdvisory
- http://seclists.org/fulldisclosure/2019/Sep/42Advisory
- http://www.securityfocus.com/bid/107485Advisory
- https://access.redhat.com/errata/RHSA-2019:0679Advisory
- https://access.redhat.com/errata/RHSA-2019:1175Advisory