CVE-2019-3855

high
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Description

An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

References

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html

http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html

http://seclists.org/fulldisclosure/2019/Sep/42

http://www.openwall.com/lists/oss-security/2019/03/18/3

http://www.securityfocus.com/bid/107485

https://access.redhat.com/errata/RHSA-2019:0679

https://access.redhat.com/errata/RHSA-2019:1175

https://access.redhat.com/errata/RHSA-2019:1652

https://access.redhat.com/errata/RHSA-2019:1791

https://access.redhat.com/errata/RHSA-2019:1943

https://access.redhat.com/errata/RHSA-2019:2399

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3855

https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/

https://lists.fedoraproject.org/archives/list/[email protected]/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/

https://lists.fedoraproject.org/archives/list/[email protected]/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/

https://seclists.org/bugtraq/2019/Apr/25

https://seclists.org/bugtraq/2019/Mar/25

https://seclists.org/bugtraq/2019/Sep/49

https://security.netapp.com/advisory/ntap-20190327-0005/

https://support.apple.com/kb/HT210609

https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767

https://www.debian.org/security/2019/dsa-4431

https://www.libssh2.org/CVE-2019-3855.html

https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Details

Source: MITRE

Published: 2019-03-21

Updated: 2020-10-15

Type: CWE-787

Risk Information

CVSS v2

Base Score: 9.3

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

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3

Base Score: 8.8

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

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH

Tenable Plugins

View all (43 total)

IDNameProductFamilySeverity
145681CentOS 8 : virt:rhel (CESA-2019:1175)NessusCentOS Local Security Checks
high
143867SUSE SLED15 / SLES15 Security Update : libssh2_org (SUSE-SU-2020:3551-1)NessusSuSE Local Security Checks
high
143507openSUSE Security Update : libssh2_org (openSUSE-2020-2126)NessusSuSE Local Security Checks
high
143452openSUSE Security Update : libssh2_org (openSUSE-2020-2129)NessusSuSE Local Security Checks
high
135851libssh2 < 1.8.1 Integer Overflow Vulnerability.NessusMacOS X Local Security Checks
high
128705NewStart CGSL MAIN 4.06 : libssh2 Multiple Vulnerabilities (NS-SA-2019-0179)NessusNewStart CGSL Local Security Checks
high
127810Amazon Linux AMI : libssh2 (ALAS-2019-1254)NessusAmazon Linux Local Security Checks
high
127716RHEL 7 : libssh2 (RHSA-2019:2399)NessusRed Hat Local Security Checks
high
127630RHEL 7 : libssh2 (RHSA-2019:1943)NessusRed Hat Local Security Checks
high
127584Oracle Linux 8 : virt:rhel (ELSA-2019-1175) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusOracle Linux Local Security Checks
high
127521Fedora 30 : libssh2 (2019-9d85600fc7)NessusFedora Local Security Checks
high
127512Fedora 29 : libssh2 (2019-5885663621)NessusFedora Local Security Checks
high
127458NewStart CGSL MAIN 4.05 : libssh2 Multiple Vulnerabilities (NS-SA-2019-0169)NessusNewStart CGSL Local Security Checks
high
127279NewStart CGSL CORE 5.04 / MAIN 5.04 : libssh2 Multiple Vulnerabilities (NS-SA-2019-0073)NessusNewStart CGSL Local Security Checks
high
126759RHEL 7 : libssh2 (RHSA-2019:1791)NessusRed Hat Local Security Checks
high
126505Virtuozzo 6 : libssh2 / libssh2-devel / libssh2-docs (VZLSA-2019-1652)NessusVirtuozzo Local Security Checks
high
126480CentOS 6 : libssh2 (CESA-2019:1652)NessusCentOS Local Security Checks
high
126454Scientific Linux Security Update : libssh2 on SL6.x i386/x86_64 (20190702)NessusScientific Linux Local Security Checks
high
126453RHEL 6 : libssh2 (RHSA-2019:1652)NessusRed Hat Local Security Checks
high
126451Oracle Linux 6 : libssh2 (ELSA-2019-1652)NessusOracle Linux Local Security Checks
high
125158Photon OS 1.0: Libssh2 PHSA-2019-1.0-0220NessusPhotonOS Local Security Checks
high
125041RHEL 8 : virt:rhel (RHSA-2019:1175) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusRed Hat Local Security Checks
high
124932EulerOS Virtualization 3.0.1.0 : libssh2 (EulerOS-SA-2019-1429)NessusHuawei Local Security Checks
high
124896EulerOS Virtualization for ARM 64 3.0.1.0 : libssh2 (EulerOS-SA-2019-1393)NessusHuawei Local Security Checks
high
124740EulerOS Virtualization 2.5.3 : libssh2 (EulerOS-SA-2019-1362)NessusHuawei Local Security Checks
high
124503Fedora 30 : libssh2 (2019-70a9d4f970)NessusFedora Local Security Checks
high
124437EulerOS 2.0 SP5 : libssh2 (EulerOS-SA-2019-1310)NessusHuawei Local Security Checks
high
124436EulerOS 2.0 SP3 : libssh2 (EulerOS-SA-2019-1309)NessusHuawei Local Security Checks
high
124435EulerOS 2.0 SP2 : libssh2 (EulerOS-SA-2019-1308)NessusHuawei Local Security Checks
high
124305Amazon Linux 2 : libssh2 (ALAS-2019-1199)NessusAmazon Linux Local Security Checks
high
124182FreeBSD : libssh2 -- multiple issues (6e58e1e9-2636-413e-9f84-4c0e21143628)NessusFreeBSD Local Security Checks
high
124039Debian DSA-4431-1 : libssh2 - security updateNessusDebian Local Security Checks
high
123760Fedora 28 : libssh2 (2019-3348cb4934)NessusFedora Local Security Checks
high
123656openSUSE Security Update : libssh2_org (openSUSE-2019-1109)NessusSuSE Local Security Checks
high
123560CentOS 7 : libssh2 (CESA-2019:0679)NessusCentOS Local Security Checks
high
123494openSUSE Security Update : libssh2_org (openSUSE-2019-1075)NessusSuSE Local Security Checks
high
123489Scientific Linux Security Update : libssh2 on SL7.x x86_64 (20190328)NessusScientific Linux Local Security Checks
high
123486RHEL 7 : libssh2 (RHSA-2019:0679)NessusRed Hat Local Security Checks
high
123483Oracle Linux 7 : libssh2 (ELSA-2019-0679)NessusOracle Linux Local Security Checks
high
123052Fedora 29 : libssh2 (2019-f31c14682f)NessusFedora Local Security Checks
high
122997SUSE SLED12 / SLES12 Security Update : libssh2_org (SUSE-SU-2019:0655-1)NessusSuSE Local Security Checks
high
122971SUSE SLES11 Security Update : libssh2_org (SUSE-SU-2019:13982-1)NessusSuSE Local Security Checks
high
122940Slackware 14.2 / current : libssh2 (SSA:2019-077-01)NessusSlackware Local Security Checks
high