Out-of-bounds Read Affecting libssh2 package, versions <1.8.1-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE38-LIBSSH2-467498
- published22 Sept 2019
- disclosed22 Sept 2019
- creditUnknown
Introduced: 22 Sep 2019
CVE-2019-3861 (opens in a new tab)How to fix?
Upgrade Alpine:3.8 libssh2 to version 1.8.1-r0 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 Alpine.
See How to fix? for Alpine:3.8 relevant fixed versions and status.
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
References
- 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-2019-3861.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-2019:2136
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861