Out-of-bounds Write Affecting libssh2 package, versions <1.8.0-2.1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
0.52% (77th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN10-LIBSSH2-340721
- published 17 Mar 2019
- disclosed 25 Mar 2019
How to fix?
Upgrade Debian:10
libssh2
to version 1.8.0-2.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libssh2
package and not the libssh2
package as distributed by Debian
.
See How to fix?
for Debian:10
relevant fixed versions and status.
A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.
References
- https://security-tracker.debian.org/tracker/CVE-2019-3863
- https://seclists.org/bugtraq/2019/Apr/25
- https://www.debian.org/security/2019/dsa-4431
- 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://www.libssh2.org/CVE-2019-3863.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://security.netapp.com/advisory/ntap-20190327-0005/
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- 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-2019-3863
- https://access.redhat.com/errata/RHSA-2019:0679
- https://access.redhat.com/errata/RHSA-2019:1175
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-3863
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/