[SECURITY] [DLA 2303-1] libssh security update

2020-07-3123:22:13

lists.debian.org

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

Confidence

High

EPSS

0.006

Percentile

78.6%

JSON

Debian LTS Advisory DLA-2303-1 [email protected]
https://www.debian.org/lts/security/ Markus Koschany
July 31, 2020 https://wiki.debian.org/LTS

Package : libssh
Version : 0.7.3-2+deb9u3
CVE ID : CVE-2020-16135

The code in src/sftpserver.c did not verify the validity of certain
pointers and expected them to be valid. A NULL pointer dereference could
have been occurred that typically causes a crash and thus a
denial-of-service.

For Debian 9 stretch, this problem has been fixed in version
0.7.3-2+deb9u3.

We recommend that you upgrade your libssh packages.

For the detailed security status of libssh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libssh

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
Debian9arm64libssh-gcrypt-4< 0.7.3-2+deb9u3libssh-gcrypt-4_0.7.3-2+deb9u3_arm64.deb
Debian9armhflibssh-4< 0.7.3-2+deb9u3libssh-4_0.7.3-2+deb9u3_armhf.deb
Debian9i386libssh-gcrypt-4< 0.7.3-2+deb9u3libssh-gcrypt-4_0.7.3-2+deb9u3_i386.deb
Debian9armellibssh-dev< 0.7.3-2+deb9u3libssh-dev_0.7.3-2+deb9u3_armel.deb
Debian9armellibssh-gcrypt-dev< 0.7.3-2+deb9u3libssh-gcrypt-dev_0.7.3-2+deb9u3_armel.deb
Debian9alllibssh-doc< 0.7.3-2+deb9u3libssh-doc_0.7.3-2+deb9u3_all.deb
Debian9arm64libssh-gcrypt-dev< 0.7.3-2+deb9u3libssh-gcrypt-dev_0.7.3-2+deb9u3_arm64.deb
Debian9armhflibssh-gcrypt-4< 0.7.3-2+deb9u3libssh-gcrypt-4_0.7.3-2+deb9u3_armhf.deb
Debian9alllibssh< 0.7.3-2+deb9u3libssh_0.7.3-2+deb9u3_all.deb
Debian9armhflibssh-dev< 0.7.3-2+deb9u3libssh-dev_0.7.3-2+deb9u3_armhf.deb

OS	Version	Architecture	Package	Version	Filename
Debian	9	arm64	libssh-gcrypt-4	< 0.7.3-2+deb9u3	libssh-gcrypt-4_0.7.3-2+deb9u3_arm64.deb
Debian	9	armhf	libssh-4	< 0.7.3-2+deb9u3	libssh-4_0.7.3-2+deb9u3_armhf.deb
Debian	9	i386	libssh-gcrypt-4	< 0.7.3-2+deb9u3	libssh-gcrypt-4_0.7.3-2+deb9u3_i386.deb
Debian	9	armel	libssh-dev	< 0.7.3-2+deb9u3	libssh-dev_0.7.3-2+deb9u3_armel.deb
Debian	9	armel	libssh-gcrypt-dev	< 0.7.3-2+deb9u3	libssh-gcrypt-dev_0.7.3-2+deb9u3_armel.deb
Debian	9	all	libssh-doc	< 0.7.3-2+deb9u3	libssh-doc_0.7.3-2+deb9u3_all.deb
Debian	9	arm64	libssh-gcrypt-dev	< 0.7.3-2+deb9u3	libssh-gcrypt-dev_0.7.3-2+deb9u3_arm64.deb
Debian	9	armhf	libssh-gcrypt-4	< 0.7.3-2+deb9u3	libssh-gcrypt-4_0.7.3-2+deb9u3_armhf.deb
Debian	9	all	libssh	< 0.7.3-2+deb9u3	libssh_0.7.3-2+deb9u3_all.deb
Debian	9	armhf	libssh-dev	< 0.7.3-2+deb9u3	libssh-dev_0.7.3-2+deb9u3_armhf.deb