Out-of-bounds Write Affecting libssh2-devel package, versions <0:1.4.3-12.amzn2.2
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-AMZN2-LIBSSH2DEVEL-1669975
- published27 Sept 2021
- disclosed25 Mar 2019
Introduced: 25 Mar 2019
CVE-2019-3863 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 libssh2-devel to version 0:1.4.3-12.amzn2.2 or higher.
This issue was patched in ALAS2-2019-1199.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libssh2-devel package and not the libssh2-devel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 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://seclists.org/bugtraq/2019/Apr/25
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3863
- https://security.netapp.com/advisory/ntap-20190327-0005/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3863
- https://www.debian.org/security/2019/dsa-4431
- 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://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- 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
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/