8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.01 Low
EPSS
Percentile
83.5%
CentOS Errata and Security Advisory CESA-2019:0679
The libssh2 packages provide a library that implements the SSH2 protocol.
Security Fix(es):
libssh2: Integer overflow in transport read resulting in out of bounds write (CVE-2019-3855)
libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write (CVE-2019-3856)
libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write (CVE-2019-3857)
libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes (CVE-2019-3863)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2019-April/085421.html
Affected packages:
libssh2
libssh2-devel
libssh2-docs
Upstream details at:
https://access.redhat.com/errata/RHSA-2019:0679
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 7 | i686 | libssh2 | < 1.4.3-12.el7_6.2 | libssh2-1.4.3-12.el7_6.2.i686.rpm |
CentOS | 7 | x86_64 | libssh2 | < 1.4.3-12.el7_6.2 | libssh2-1.4.3-12.el7_6.2.x86_64.rpm |
CentOS | 7 | i686 | libssh2-devel | < 1.4.3-12.el7_6.2 | libssh2-devel-1.4.3-12.el7_6.2.i686.rpm |
CentOS | 7 | x86_64 | libssh2-devel | < 1.4.3-12.el7_6.2 | libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm |
CentOS | 7 | noarch | libssh2-docs | < 1.4.3-12.el7_6.2 | libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm |
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.01 Low
EPSS
Percentile
83.5%