CVE-2019-3855: Integer Overflow
First published: Mon Mar 11 2019(Updated: )
A malicious server could send a specially crafted packet which could result in an unchecked integer overflow. The value would then be used to allocate memory causing a possible memory write out of bounds error.
Credit: Chris Coulson secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libssh2 | <1.8.1 | 1.8.1 |
| debian/libssh2 | <=1.8.0-2<=1.4.3-4.1+deb8u1<=1.4.3-1<=1.7.0-1 | 1.4.3-4.1+deb8u2 1.8.0-2.1 1.7.0-1+deb9u1 |
| Apple Xcode | <11.0 | 11.0 |
| debian/libssh2 | 1.8.0-2.1 1.8.0-2.1+deb10u1 1.9.0-2 1.10.0-3 1.11.0-2 | |
| Libssh2 Libssh2 | <1.8.1 | |
| Fedoraproject Fedora | =28 | |
| Fedoraproject Fedora | =29 | |
| Fedoraproject Fedora | =30 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| NetApp ONTAP Select Deploy administration utility | ||
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Server Aus | =7.6 | |
| Redhat Enterprise Linux Server Eus | =7.6 | |
| Redhat Enterprise Linux Server Tus | =7.6 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| openSUSE Leap | =42.3 | |
| Apple Xcode | <11.0 | |
| Oracle PeopleSoft Enterprise PeopleTools | =8.56 | |
| Oracle PeopleSoft Enterprise PeopleTools | =8.57 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://security-tracker.debian.org/tracker/CVE-2019-3855
- https://security-tracker.debian.org/tracker/CVE-2019-3856
- https://security-tracker.debian.org/tracker/CVE-2019-3857
- https://security-tracker.debian.org/tracker/CVE-2019-3858
- https://security-tracker.debian.org/tracker/CVE-2019-3859
- https://security-tracker.debian.org/tracker/CVE-2019-3860
- https://security-tracker.debian.org/tracker/CVE-2019-3861
- https://security-tracker.debian.org/tracker/CVE-2019-3862
- https://security-tracker.debian.org/tracker/CVE-2019-3863
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3855
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3856
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3857
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3858
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3859
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3860
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3861
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3862
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3863
- https://github.com/libssh2/libssh2/commit/ca2744483eac4e707084df5fc55cc69d57571dde
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924965
- https://support.apple.com/en-us/HT210609 (Advisory)
- https://www.libssh2.org/CVE-2019-3855.html
- https://libssh2.org/1.8.0-CVE/CVE-2019-3855.patch
- https://github.com/libssh2/libssh2/pull/315
- 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/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/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.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://github.com/libssh2/libssh2/commit/dc109a7f518757741590bb993c0c8412928ccec2
- https://www.openwall.com/lists/oss-security/2019/03/18/3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690246
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690247
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690248
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690408
- https://bugzilla.redhat.com/show_bug.cgi?id=1687303
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2019-3855?
CVE-2019-3855 is an integer overflow flaw in libssh2 before version 1.8.1.
How severe is CVE-2019-3855?
CVE-2019-3855 has a severity rating of 8.8, which is classified as critical.
What is the impact of CVE-2019-3855?
CVE-2019-3855 could lead to an out-of-bounds write and allow a remote attacker to execute code when a user connects to a compromised SSH server.
Which software versions are affected by CVE-2019-3855?
The affected software includes libssh2 versions before 1.8.1, Xcode before version 11.0, and various versions of Debian, Fedora, Redhat, and other products.
How can I fix CVE-2019-3855?
To fix CVE-2019-3855, update libssh2 to version 1.8.1 or later, and ensure you are using the latest versions of other affected software.
- collector/debian-bugs
- alias/CVE-2019-3855
- collector/apple-support
- collector/security-tracker-debian
- collector/nvd-index
- agent/type
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/references
- agent/description
- agent/weakness
- agent/severity
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- agent/tags
- agent/event
- collector/mitre-cve
- source/MITRE
- package-manager/debian
- vendor/apple
- canonical/apple xcode
- vendor/libssh2
- canonical/libssh2 libssh2
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/28
- version/fedoraproject fedora/29
- version/fedoraproject fedora/30
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- version/debian debian linux/9.0
- vendor/netapp
- canonical/netapp ontap select deploy administration utility
- vendor/redhat
- canonical/redhat enterprise linux
- version/redhat enterprise linux/8.0
- canonical/redhat enterprise linux desktop
- version/redhat enterprise linux desktop/7.0
- canonical/redhat enterprise linux server
- version/redhat enterprise linux server/7.0
- canonical/redhat enterprise linux server aus
- version/redhat enterprise linux server aus/7.6
- canonical/redhat enterprise linux server eus
- version/redhat enterprise linux server eus/7.6
- canonical/redhat enterprise linux server tus
- version/redhat enterprise linux server tus/7.6
- canonical/redhat enterprise linux workstation
- version/redhat enterprise linux workstation/7.0
- vendor/opensuse
- canonical/opensuse leap
- version/opensuse leap/42.3
- vendor/oracle
- canonical/oracle peoplesoft enterprise peopletools
- version/oracle peoplesoft enterprise peopletools/8.56
- version/oracle peoplesoft enterprise peopletools/8.57
- package-manager/redhat