Out-of-bounds Read in Libssh2
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.
Vulnerability class: Buffer Overflow
EPSS: 0.064 (93.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.
Affected products
- Libssh2
- Netapp Ontap_select_deploy_administration_utility
- The Libssh2 Project — versions 1.8.1
- Debian Debian_linux — versions 8.0
- Fedoraproject Fedora — versions 29
- Opensuse Leap — versions 15.0, 42.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-3858?
- CVE-2019-3858 is a medium-severity vulnerability in Libssh2, classified under Out-of-bounds Read. CVSS score: 5.0/10. Published 2019-03-21.
- How severe is CVE-2019-3858?
- Medium severity. CVSS v3 base score is 5.0 out of 10.
- Is CVE-2019-3858 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.