CVE-2019-16905
OpenSSH XMSS Key Type Pre-Authentication Code Execution Vulnerability
Description
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
INFO
Published Date :
Oct. 9, 2019, 8:15 p.m.
Last Modified :
March 1, 2023, 1:56 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2019-16905 has a 3 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2019-16905
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-16905.
| URL | Resource |
|---|---|
| https://0day.life/exploits/0day-1009.html | Exploit Third Party Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1153537 | Issue Tracking Third Party Advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf | Third Party Advisory |
| https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c | Release Notes Vendor Advisory |
| https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h | Patch |
| https://security.gentoo.org/glsa/201911-01 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20191024-0003/ | Third Party Advisory |
| https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow | Exploit Third Party Advisory |
| https://www.openssh.com/releasenotes.html | Release Notes |
| https://www.openwall.com/lists/oss-security/2019/10/09/1 | Mailing List Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Walkthrough and Writeups for the HackTheBox Penetration Lab Testing Environment
Easily scan for CVEs using nmap.
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Shell
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-16905 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-16905 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 01, 2023
Action Type Old Value New Value Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory Changed Reference Type https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch, Vendor Advisory https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch Changed Reference Type https://www.openssh.com/releasenotes.html Release Notes, Vendor Advisory https://www.openssh.com/releasenotes.html Release Notes Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.7 OR cpe:2.3:h:siemens:scalance_x204rna:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204rna_ecc_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.7 OR cpe:2.3:h:siemens:scalance_x204rna_ecc:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 13, 2022
Action Type Old Value New Value Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 31, 2022
Action Type Old Value New Value Changed Reference Type https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c Vendor Advisory https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c Release Notes, Vendor Advisory Changed Reference Type https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch, Vendor Advisory Changed Reference Type https://security.gentoo.org/glsa/201911-01 No Types Assigned https://security.gentoo.org/glsa/201911-01 Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20191024-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20191024-0003/ Third Party Advisory Changed Reference Type https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow No Types Assigned https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow Exploit, Third Party Advisory Changed Reference Type https://www.openssh.com/releasenotes.html Release Notes https://www.openssh.com/releasenotes.html Release Notes, Vendor Advisory Removed CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-190 CWE-190 CWE-787 -
CVE Modified by [email protected]
Nov. 07, 2019
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201911-01 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 24, 2019
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20191024-0003/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 22, 2019
Action Type Old Value New Value Added Reference https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 21, 2019
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
Initial Analysis by [email protected]
Oct. 16, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://0day.life/exploits/0day-1009.html No Types Assigned https://0day.life/exploits/0day-1009.html Exploit, Third Party Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1153537 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1153537 Issue Tracking, Third Party Advisory Changed Reference Type https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c No Types Assigned https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c Vendor Advisory Changed Reference Type https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h No Types Assigned https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch Changed Reference Type https://www.openssh.com/releasenotes.html No Types Assigned https://www.openssh.com/releasenotes.html Release Notes Changed Reference Type https://www.openwall.com/lists/oss-security/2019/10/09/1 No Types Assigned https://www.openwall.com/lists/oss-security/2019/10/09/1 Mailing List, Third Party Advisory Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions from (including) 7.7 up to (including) 7.9 *cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions from (including) 8.0 up to (excluding) 8.1 -
CVE Modified by [email protected]
Oct. 10, 2019
Action Type Old Value New Value Added Reference https://0day.life/exploits/0day-1009.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 10, 2019
Action Type Old Value New Value Added Reference https://bugzilla.suse.com/show_bug.cgi?id=1153537 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-16905 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-16905
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.14568
percentile