[SECURITY] [DLA 1991-1] libssh2 security update

2019-11-1314:54:07

lists.debian.org

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.004 Low

EPSS

Percentile

73.5%

JSON

Package : libssh2
Version : 1.4.3-4.1+deb8u6
CVE ID : CVE-2019-17498
Debian Bug : 943562

In libssh2, SSH_MSG_DISCONNECT logic in packet.c has an integer
overflow in a bounds check, enabling an attacker to specify an
arbitrary (out-of-bounds) offset for a subsequent memory read. A
crafted SSH server may be able to disclose sensitive information or
cause a denial of service condition on the client system when a user
connects to the server

For Debian 8 "Jessie", this problem has been fixed in version
1.4.3-4.1+deb8u6.

We recommend that you upgrade your libssh2 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

OSVersionArchitecturePackageVersionFilename
Debian9i386libssh2-1-dev< 1.7.0-1+deb9u2libssh2-1-dev_1.7.0-1+deb9u2_i386.deb
Debian9i386libssh2-1-dbg< 1.7.0-1+deb9u2libssh2-1-dbg_1.7.0-1+deb9u2_i386.deb
Debian8armellibssh2-1< 1.4.3-4.1+deb8u6libssh2-1_1.4.3-4.1+deb8u6_armel.deb
Debian8amd64libssh2-1-dev< 1.4.3-4.1+deb8u6libssh2-1-dev_1.4.3-4.1+deb8u6_amd64.deb
Debian9armhflibssh2-1-dev< 1.7.0-1+deb9u2libssh2-1-dev_1.7.0-1+deb9u2_armhf.deb
Debian8alllibssh2< 1.4.3-4.1+deb8u6libssh2_1.4.3-4.1+deb8u6_all.deb
Debian9i386libssh2-1< 1.7.0-1+deb9u2libssh2-1_1.7.0-1+deb9u2_i386.deb
Debian10arm64libssh2-1-dev< 1.8.0-2.1+deb10u1libssh2-1-dev_1.8.0-2.1+deb10u1_arm64.deb
Debian8armellibssh2-1-dev< 1.4.3-4.1+deb8u6libssh2-1-dev_1.4.3-4.1+deb8u6_armel.deb
Debian9arm64libssh2-1-dbg< 1.7.0-1+deb9u2libssh2-1-dbg_1.7.0-1+deb9u2_arm64.deb

OS	Version	Architecture	Package	Version	Filename
Debian	9	i386	libssh2-1-dev	< 1.7.0-1+deb9u2	libssh2-1-dev_1.7.0-1+deb9u2_i386.deb
Debian	9	i386	libssh2-1-dbg	< 1.7.0-1+deb9u2	libssh2-1-dbg_1.7.0-1+deb9u2_i386.deb
Debian	8	armel	libssh2-1	< 1.4.3-4.1+deb8u6	libssh2-1_1.4.3-4.1+deb8u6_armel.deb
Debian	8	amd64	libssh2-1-dev	< 1.4.3-4.1+deb8u6	libssh2-1-dev_1.4.3-4.1+deb8u6_amd64.deb
Debian	9	armhf	libssh2-1-dev	< 1.7.0-1+deb9u2	libssh2-1-dev_1.7.0-1+deb9u2_armhf.deb
Debian	8	all	libssh2	< 1.4.3-4.1+deb8u6	libssh2_1.4.3-4.1+deb8u6_all.deb
Debian	9	i386	libssh2-1	< 1.7.0-1+deb9u2	libssh2-1_1.7.0-1+deb9u2_i386.deb
Debian	10	arm64	libssh2-1-dev	< 1.8.0-2.1+deb10u1	libssh2-1-dev_1.8.0-2.1+deb10u1_arm64.deb
Debian	8	armel	libssh2-1-dev	< 1.4.3-4.1+deb8u6	libssh2-1-dev_1.4.3-4.1+deb8u6_armel.deb
Debian	9	arm64	libssh2-1-dbg	< 1.7.0-1+deb9u2	libssh2-1-dbg_1.7.0-1+deb9u2_arm64.deb