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centosCentOS ProjectCESA-2019:2136
HistoryAug 30, 2019 - 3:29 a.m.

libssh2 security update

2019-08-3003:29:04
CentOS Project
lists.centos.org
218

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:N/A:P

0.033 Low

EPSS

Percentile

91.1%

CentOS Errata and Security Advisory CESA-2019:2136

The libssh2 packages provide a library that implements the SSH2 protocol.

The following packages have been upgraded to a later upstream version: libssh2 (1.8.0). (BZ#1592784)

Security Fix(es):

  • libssh2: Zero-byte allocation with a specially crafted SFTP packed leading to an out-of-bounds read (CVE-2019-3858)

  • libssh2: Out-of-bounds reads with specially crafted SSH packets (CVE-2019-3861)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2019-August/032234.html

Affected packages:
libssh2
libssh2-devel
libssh2-docs

Upstream details at:
https://access.redhat.com/errata/RHSA-2019:2136

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:N/A:P

0.033 Low

EPSS

Percentile

91.1%