Integer overflow in NetApp Cloud Backup
CVE-2019-16905
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openssh.com/releasenotes.html (Release Notes)
- www.openwall.com/lists/oss-security/2019/10/09/1 (Mailing List, Third Party Advisory)
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff (Patch)
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c (Release Notes, Vendor Advisory)
- bugzilla.suse.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-ove… (Exploit, Third Party Advisory)
- security.netapp.com/advisory/ntap-20191024-0003/ (Third Party Advisory)
- security.gentoo.org/glsa/201911-01 (vendor-advisory, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16905?
- CVE-2019-16905 is a high-severity vulnerability in NetApp Cloud Backup, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2019-10-09.
- How severe is CVE-2019-16905?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-16905 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.