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AUSCERT External Security Bulletin Redistribution
ESB-2019.1075
SUSE-SU-2019:13997-1 Security update for libssh2_org
1 April 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: libssh2_org
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-3863 CVE-2019-3862 CVE-2019-3861
CVE-2019-3860 CVE-2019-3859 CVE-2019-3858
CVE-2019-3857 CVE-2019-3856 CVE-2019-3855
Reference: ESB-2019.1047
ESB-2019.0996
ESB-2019.0911
ESB-2019.0894
Original Bulletin:
https://www.suse.com/support/update/announcement/2019/suse-su-201913997-1.html
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SUSE Security Update: Security update for libssh2_org
______________________________________________________________________________
Announcement ID: SUSE-SU-2019:13997-1
Rating: moderate
References: #1091236 #1128471 #1128472 #1128474 #1128476 #1128480
#1128481 #1128490 #1128492 #1128493
Cross-References: CVE-2019-3855 CVE-2019-3856 CVE-2019-3857 CVE-2019-3858
CVE-2019-3859 CVE-2019-3860 CVE-2019-3861 CVE-2019-3862
CVE-2019-3863
Affected Products:
SUSE Linux Enterprise Point of Sale 11-SP3
SUSE Linux Enterprise Debuginfo 11-SP3
______________________________________________________________________________
An update that solves 9 vulnerabilities and has one errata is now available.
Description:
This update for libssh2_org fixes the following issues:
Security issues fixed:
o CVE-2019-3861: Fixed Out-of-bounds reads with specially crafted SSH packets
(bsc#1128490).
o CVE-2019-3862: Fixed Out-of-bounds memory comparison with specially crafted
message channel request packet (bsc#1128492).
o CVE-2019-3860: Fixed Out-of-bounds reads with specially crafted SFTP
packets (bsc#1128481).
o CVE-2019-3863: Fixed an Integer overflow in user authenticate keyboard
interactive which could allow out-of-bounds writes with specially crafted
keyboard responses (bsc#1128493).
o CVE-2019-3856: Fixed a potential Integer overflow in keyboard interactive
handling which could allow out-of-bounds write with specially crafted
payload (bsc#1128472).
o CVE-2019-3859: Fixed Out-of-bounds reads with specially crafted payloads
due to unchecked use of _libssh2_packet_require and
_libssh2_packet_requirev (bsc#1128480).
o CVE-2019-3855: Fixed a potential Integer overflow in transport read which
could allow out-of-bounds write with specially crafted payload (bsc#
1128471).
o CVE-2019-3858: Fixed a potential zero-byte allocation which could lead to
an out-of-bounds read with a specially crafted SFTP packet (bsc#1128476).
o CVE-2019-3857: Fixed a potential Integer overflow which could lead to
zero-byte allocation and out-of-bounds with specially crafted message
channel request SSH packet (bsc#1128474).
Other issue addressed:
o Fixed an issue where libssh2 stops parsing known_hosts (bsc#1091236).
Patch Instructions:
To install this SUSE Security Update use the SUSE recommended installation
methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
o SUSE Linux Enterprise Point of Sale 11-SP3:
zypper in -t patch sleposp3-libssh2_org-13997=1
o SUSE Linux Enterprise Debuginfo 11-SP3:
zypper in -t patch dbgsp3-libssh2_org-13997=1
Package List:
o SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
libssh2-1-1.2.9-4.2.12.5.1
o SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):
libssh2_org-debuginfo-1.2.9-4.2.12.5.1
libssh2_org-debugsource-1.2.9-4.2.12.5.1
References:
o https://www.suse.com/security/cve/CVE-2019-3855.html
o https://www.suse.com/security/cve/CVE-2019-3856.html
o https://www.suse.com/security/cve/CVE-2019-3857.html
o https://www.suse.com/security/cve/CVE-2019-3858.html
o https://www.suse.com/security/cve/CVE-2019-3859.html
o https://www.suse.com/security/cve/CVE-2019-3860.html
o https://www.suse.com/security/cve/CVE-2019-3861.html
o https://www.suse.com/security/cve/CVE-2019-3862.html
o https://www.suse.com/security/cve/CVE-2019-3863.html
o https://bugzilla.suse.com/1091236
o https://bugzilla.suse.com/1128471
o https://bugzilla.suse.com/1128472
o https://bugzilla.suse.com/1128474
o https://bugzilla.suse.com/1128476
o https://bugzilla.suse.com/1128480
o https://bugzilla.suse.com/1128481
o https://bugzilla.suse.com/1128490
o https://bugzilla.suse.com/1128492
o https://bugzilla.suse.com/1128493
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