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libssh2: integer overflow in SSH_MSG_DISCONNECT logic in packet.c

🗓️ 29 Sep 2020 20:51:33Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

Libssh2 before 1.9.1 has overflow in disconnect bounds check causing out-of-bounds reads and DoS.

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Refs
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ibm		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
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ibm		Security Bulletin: Security vulnerabilities have been identified in BigFix Platform shipped with IBM License Metric Tool.
19 May 202013:33
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ibm		Security Bulletin: Vulnerability in libssh2 CVE-2019-17498.
22 Sep 202123:38
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ibm		Security Bulletin: IBM MQ Appliance is affected by a libssh2 vulnerability (CVE-2019-17498)
20 Jan 202112:27
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ibm		Security Bulletin: Multiple Security Vulnerabilties have been fixed in the IBM Security Access Manager and IBM Security Verify Access appliances.
16 Mar 202119:55
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ibm		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
27 Jan 202100:04
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nessus		Amazon Linux 2 : libssh2 (ALAS-2020-1531)
28 Oct 202000:00
–nessus
nessus		CentOS 7 : libssh2 (RHSA-2020:3915)
20 Oct 202000:00
–nessus
nessus		Debian DLA-1991-1 : libssh2 security update
14 Nov 201900:00
–nessus
nessus		Debian DLA-2848-1 : libssh2 - LTS security update
18 Dec 202100:00
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7i686libssh21.8.0-4.el7libssh2-1.8.0-4.el7.i686.rpm
Red Hat Enterprise Linux7ppclibssh21.8.0-4.el7libssh2-1.8.0-4.el7.ppc.rpm
Red Hat Enterprise Linux7ppc64libssh21.8.0-4.el7libssh2-1.8.0-4.el7.ppc64.rpm
Red Hat Enterprise Linux7ppc64lelibssh21.8.0-4.el7libssh2-1.8.0-4.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390libssh21.8.0-4.el7libssh2-1.8.0-4.el7.s390.rpm
Red Hat Enterprise Linux7s390xlibssh21.8.0-4.el7libssh2-1.8.0-4.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64libssh21.8.0-4.el7libssh2-1.8.0-4.el7.x86_64.rpm
Red Hat Enterprise Linux7i686libssh2-debuginfo1.8.0-4.el7libssh2-debuginfo-1.8.0-4.el7.i686.rpm
Red Hat Enterprise Linux7ppclibssh2-debuginfo1.8.0-4.el7libssh2-debuginfo-1.8.0-4.el7.ppc.rpm
Red Hat Enterprise Linux7ppc64libssh2-debuginfo1.8.0-4.el7libssh2-debuginfo-1.8.0-4.el7.ppc64.rpm
Rows per page

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28 Jun 2026 09:06Current
7.1High risk
Vulners AI Score7.1
CVSS 25.8
CVSS 3.18.1
EPSS0.03793
CWE-190
libssh2overflowdisconnect handlingbounds checkout of boundsdenial of servicevulnerability
3